2026-04-04T08:15:23Z https://rodare.hzdr.de/oai2d

oai:rodare.hzdr.de:988 2024-08-14T10:38:57Z openaire_data user-rodare user-fwd user-topflow

Mohseni, Ehsan Ziegenhein, Thomas Reinecke, Sebastian Felix Hampel, Uwe 2021-05-21 This is the data for the publication ID 32653. https://rodare.hzdr.de/record/988 10.14278/rodare.988 oai:rodare.hzdr.de:988 doi:10.1016/j.ces.2021.116698 url:https://www.hzdr.de/publications/Publ-32653 url:https://www.hzdr.de/publications/Publ-32655 doi:10.14278/rodare.987 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/closedAccess Data for: Bubble formation from sub-millimeter orifices under variable gas flow conditions info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1843 2024-08-14T10:38:57Z openaire_data user-fwd user-rodare user-topflow

Mohseni, Ehsan Ziegenhein, Thomas Reinecke, Sebastian Felix Hampel, Uwe 2021-05-21 This is the data for the publication ID 32653. https://rodare.hzdr.de/record/1843 10.14278/rodare.1843 oai:rodare.hzdr.de:1843 doi:10.1016/j.ces.2021.116698 url:https://www.hzdr.de/publications/Publ-32653 url:https://www.hzdr.de/publications/Publ-32655 doi:10.14278/rodare.987 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/closedAccess Data for: Bubble formation from sub-millimeter orifices under variable gas flow conditions info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:8 2024-08-14T11:30:36Z openaire_data user-rodare user-fwd user-topflow

Bieberle, André Neumann, Martin Schäfer, Thomas 2018-04-12 This data set contains raw data and data read-in routines used for the publication: "Advanced process-synchronized computed tomography for the investigation of periodic processes" Object of investigation: A centrifugal pump that impeller rotates at 1480 rpm and that is operated in gas-liquid two phase flow. Used CT imaging system: HireCT (high resolution gamma-ray computed tomography) scanner of the HZDR https://rodare.hzdr.de/record/8 10.14278/rodare.8 oai:rodare.hzdr.de:8 eng url:https://www.hzdr.de/publications/Publ-27335 doi:10.14278/rodare.7 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Tomographic imaging synchronized data acquisition multiphase flow centrifugal pump Data set to illustrate advanced process-synchronized computed tomography for the investigation of periodic processes info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:4183 2025-12-12T13:21:11Z openaire_data user-fwd user-hzdr user-rodare

Bieberle, André Lami, Luca Kryk, Holger Geißelbrecht, Michael Bieberle, André 2025-12-12 This data archive contains the pulse height spectra recorded with the MCA-527 (GBS) multichannel analyser and the corresponding history files. The pulse height spectra were recorded continuously throughout the day with an integration time of 300 s. The scintillation detector was operated at +800 V. The data is used for quantitative liquid holdup determination. https://rodare.hzdr.de/record/4183 10.14278/rodare.4183 oai:rodare.hzdr.de:4183 eng url:https://www.hzdr.de/publications/Publ-42445 doi:10.14278/rodare.4182 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess gamma-radiation densitometry phase fraction determination Densitometric scans on a LOHC Reactor info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:204 2024-08-14T10:47:05Z openaire_data user-fwd user-rodare user-topflow

Timaeus, Robert Schleicher, Eckhard Bieberle, André Hampel, Uwe Schubert, Markus 2019-11-18 This publication contains the hydrodynamic data of an advanced inclined rotating fixed-bed reactor with inner tube. The phase distribution in the cross-section of the reactor and the normalized liquid filling level (normalized to the reactor diameter) were obtained with a capacitance wire-mesh sensor. Besides, the specific pressure drops for the investigated operating points are given. Furthermore, the porostiy profile of different configurations (different particle and inner tube diameter) are stored, which were obtained by gamm-ray computed tomography. https://rodare.hzdr.de/record/204 10.14278/rodare.204 oai:rodare.hzdr.de:204 url:https://www.hzdr.de/publications/Publ-29956 url:https://www.hzdr.de/publications/Publ-30121 doi:10.14278/rodare.203 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Capacitance wire-mesh sensor gamma-ray tomography inclined rotating fixed-bed reactor Hydrodynamic data of an advanced inclined rotating fixed-bed reactor info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:4471 2026-02-02T07:59:05Z openaire_data openaire_data user-fwd user-rodare user-rofex

Barthel, Frank Bieberle, Martina Strybny, Bastian 2026-01-28 This data set includes reconstructed image sequences from ultrafast X-ray CT scans of fresh concrete with different compositions before and after compaction of 30 s on a vibration table. The scans of the concrete samples were performed with a speed of 50 mm/s in vertical direction. The properties of the different compositions are given in the Excel file. https://rodare.hzdr.de/record/4471 10.14278/rodare.4471 oai:rodare.hzdr.de:4471 url:https://www.hzdr.de/publications/Publ-42895 doi:10.14278/rodare.4470 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/rofex info:eu-repo/semantics/restrictedAccess ultrafast X-ray CT fresh concrete Ultrafast X-ray CT data of air void distribution in fresh concrete for different concrete compositions info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1146 2023-10-24T09:20:18Z openaire_data user-fwd user-rodare

Lecrivain, Gregory Lecrivain, Gregory 2022-02-01 # 'Flowrate.JPG': Table associating a raw image (see 'org' folder below) with the flow rate (Q) in L/min # 'Rough': raw data obtained with the rough substrate # 'Smooth': raw data obtained with the smooth substrate # "Smooth" and "Rough" folders contain a list of subfolders Mi, with i=0,1,2,... the measurement index. Ex: M1: is a first series of measurements and M2: a second series of measurements. Each Mi folder contains the following data: ## 'org': List of pictures (Acquisition_AAA_-BBBBBB.jpg) taken with the high-resolution camera. With AAA=000,001,002,... is the flow rate association. To associate AAA with the flow rate, see 'Flowrate.JPG'. Ex: '000' -> Q = 0 L/min, '001' -> Q = 20 L/min. BBB=000001,000002 or 000003 are pictures of the same particle bed taken at increasing time interval. These 3 pictures are used to check particle bed equilibrium. ## 'pic_CCC.jpg' with CCC=001, 002, 003: simply a copy of the raw picture in 'org' with bed at equilibrium. The association between the index (CCC) and the flow rate (Q) is identical to that described in 'org' (AAA). ## 'Particles_CCC.csv' with CCC=001, 002, 003: List of particle positions (called tags in the manuscript) in each respective image. https://rodare.hzdr.de/record/1146 10.14278/rodare.1146 oai:rodare.hzdr.de:1146 eng url:https://www.hzdr.de/publications/Publ-33098 doi:10.14278/rodare.1145 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Particle resuspension Particle adhesion Turbulent gas flow Surface functionalization Surface roughness. Raw data related to publication entitled "Turbulent resuspension of micron particles from a wall surface functionalized with cylindrical micropillars" by Banari, A. et al. info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:2549 2025-04-22T05:22:57Z software user-fwd user-ecfunded user-energy user-rodare

Weier, Tom Nash, William Personnettaz, Paolo Weber, Norbert 2023-11-05 Yamdb (Yet Another Materials Database/YAMl materials DataBase) is a Python library providing thermophysical properties of liquid metals and molten salts in an easily accessible manner. Mathematical relations describing material properties - usually determined by experiment - are taken from the literature and implemented in Python. The coefficients of these equations are stored separately in YAML files. https://rodare.hzdr.de/record/2549 10.14278/rodare.2549 oai:rodare.hzdr.de:2549 eng info:eu-repo/grantAgreement/EC/H2020/963599/ url:https://www.hzdr.de/publications/Publ-41239 url:https://www.hzdr.de/publications/Publ-37574 url:https://www.hzdr.de/publications/Publ-37766 doi:10.14278/rodare.2548 url:https://rodare.hzdr.de/communities/ecfunded url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/MIT material properties liquid metals molten salts YAML Python Yamdb - Yet Another Materials DataBase info:eu-repo/semantics/other software

oai:rodare.hzdr.de:3953 2025-08-29T11:19:23Z openaire_data user-energy user-fwd user-hzdr user-rodare

Babich, Alexander Bashkatov, Aleksandr Eftekhari, Milad Yang, Xuegeng Strasser, Peter Mutschke, Gerd Eckert, Kerstin 2025-08-29 Raw data on bubble growth on microelectrodes https://rodare.hzdr.de/record/3953 10.14278/rodare.3953 oai:rodare.hzdr.de:3953 doi:10.1103/PRXEnergy.4.013011 url:https://www.hzdr.de/publications/Publ-41263 url:https://www.hzdr.de/publications/Publ-41261 doi:10.14278/rodare.3952 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Bubble dynamics Marangoni convection Multiphase flows Thermocapillarity Data publication: Oxygen versus Hydrogen Bubble Dynamics during Water Electrolysis at Microelectrodes info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1828 2022-08-10T12:35:09Z software user-energy user-fwd user-rodare

Personnettaz, Paolo Weber, Norbert Weier, Tom 2022-08-05 This software illustrates the applications of the programming techniques detailed in the book chapter Norbert Weber, Tom Weier (2022) Liquid Metal Batteries. In: Steven Beale, Werner Lehnert (eds.) Electrochemical Cell Calculations with OpenFOAM. Lecture Notes in Energy 42, pp. 193-212. The included solver handles the heat and mass transport equations under the assumption of pure diffusion and with solutal convection. It is a single region solver that is based on laplacianFoam and boussinesqPimpleFoam from OpenFOAM 6. This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 963599, and was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) by award number 338560565, by a postdoc fellowship of the German Academic Exchange Service (DAAD) and in frame of the Helmholtz—RSF Joint Research Group "Magnetohydrodynamic instabilities: Crucial relevance for large scale liquid metal batteries and the sun-climate connection", contract No. HRSF- 0044 and RSF-18-41-06201. We thank P. Personnettaz for providing the source code and example. https://rodare.hzdr.de/record/1828 10.14278/rodare.1828 oai:rodare.hzdr.de:1828 eng doi:10.1007/978-3-030-92178-1_7 url:https://www.hzdr.de/publications/Publ-31807 url:https://www.hzdr.de/publications/Publ-35001 doi:10.14278/rodare.1827 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 liquid metal batteries OpenFOAM hmctFOAM - heat mass concentration transport FOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:1758 2024-08-14T10:29:10Z openaire_data user-fwd user-energy user-rodare user-topflow

Bieberle, André Schubert, Markus Zippe, Cornelius Bieberle, André Loll, Rouven Pyka, Tobias Schubert, Markus 2022-06-29 For liquid fraction investigations in a rotating printed zick-zack foam (big) packed bed (RPB) angular-resolved time-averaged gamma-ray computed tomography (GammaCT) is applied. Liquid is injected by a multi point injector. This repository contains: the raw data of the gamma-ray CT scanner, the extracted projection-averaged profile data matrix and the restructured angular-resolved time-averaged sinogram data. https://rodare.hzdr.de/record/1758 10.14278/rodare.1758 oai:rodare.hzdr.de:1758 eng url:https://www.hzdr.de/publications/Publ-34858 doi:10.14278/rodare.1757 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Rotating Packed Bed Process Intensivation Computed Tomography RawData - Liquid fraction investigations in a RPB (big printed zick-zack foam, multi point) using GammaCT info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3594 2025-03-04T12:54:40Z software user-ecfunded user-fwd user-rodare

Duczek, Carolina Weber, Norbert Godinez-Brizuela, Omar Weier, Tom 2023-05-26 Solver and simulation data for validation test case https://rodare.hzdr.de/record/3594 10.14278/rodare.3594 oai:rodare.hzdr.de:3594 info:eu-repo/grantAgreement/EC/H2020/963599/ doi:10.1016/j.electacta.2022.141413 doi:10.1016/j.electacta.2022.141413 url:https://www.hzdr.de/publications/Publ-37032 url:https://www.hzdr.de/publications/Publ-34956 doi:10.14278/rodare.2312 url:https://rodare.hzdr.de/communities/ecfunded url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 OpenFOAM liquid metal battery molten salt battery species transfer Data publication: Simulation of potential and species distribution in a Li||Bi liquid metal battery using coupled meshes info:eu-repo/semantics/other software

oai:rodare.hzdr.de:228 2022-01-12T10:36:49Z user-fwd user-hzdr user-rodare

Schindler, Felix Zürner, Till Vogt, Tobias Eckert, Sven Schumacher, Jörg 2019-07-01 Lecture (Conference) 11th PAMIR International Conference- Fundamental and Applied MHD July 1-5, 2019, Reims, EVEM France We are investigating turbulent Rayleigh-Bénard convection in liquid metal under the influence of a vertical magnetic field. Utilizing a combination of thermocouple (TC) and ultrasound-Doppler-velocimetry (UDV) measurements gives us the possibility to directly determine the temperature and velocity field, respectively. Further this gives us the possibility to observe changes in the large-scale flow structure. By applying magnetic fields to the liquid metal convection, we quantified changes of heat and momentum transport in the liquid metal alloy GaInSn. The experimental results of our setup agree well with theory findings and direct numerical simulations of the dynamics in our convection cell. The requirement of large computing power at these parameters makes it hard to simulate long-term dynamics with time scales from minutes to several hours. Thus to investigate slow developing dynamics like sloshing, rotation, or deformation of the large- scale flow structure model experiments are indispensable. We demonstrate the suppression of the convective flow by a vertical magnetic field in a cylindrical cell of aspect ratio 1. In this setup Rayleigh numbers up to 6·107 are investigated. The flow structure at low Hartmann numbers is a single roll large scale circulation (LSC). Increasing the Hartmann number leads to a transition from the single-roll LSC into a cell structure. An even stronger magnetic field supresses the flow in the center of the cell completely and expels the flow to the side walls. Even above the critical Hartmann numbers corresponding to the Chandrasekhar limit for the onset of magnetoconvection in a fluid layer without lateral boundaries we still observe remarkable flows near the side walls. The destabilising effect of the non-conducting side walls was predicted by theory and simulations, and is here for the first time experimentally confirmed. Support by Deutsche Forschungsgemeinschaft with grants VO 2332/1-1 and SCHU 1410/29-1 https://rodare.hzdr.de/record/228 10.14278/rodare.228 oai:rodare.hzdr.de:228 eng doi:10.1017/S0022112096004491 doi:10.1103/physreve.62.r4520 doi:10.1017/jfm.2018.479 doi:10.1073/pnas.1417741112 doi:10.1017/jfm.2019.556 url:https://www.hzdr.de/publications/Publ-28698 url:https://www.hzdr.de/publications/Publ-30439 doi:10.14278/rodare.227 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Rayleigh-Bénard-Convection Magnetohydrodynamic low Prandtl Number liquid metal Ultrasound velocimetry Low Prandtl Number Rayleigh-Bénard Convection in a Vertical Magnetic Field info:eu-repo/semantics/lecture presentation

oai:rodare.hzdr.de:3208 2024-10-21T14:18:12Z openaire_data user-fwd user-hzdr user-rodare user-rofex user-topflow

Barthel, Frank Sprewitz, Uwe Sohr, Johanna Schubert, Markus Bieberle, André Sohr, Johanna Barthel, Frank Sprewitz, Uwe Schubert, Markus 2024-10-18 This repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-750 (specific geometric surface area is 750 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files. https://rodare.hzdr.de/record/3208 10.14278/rodare.3208 oai:rodare.hzdr.de:3208 eng url:https://www.hzdr.de/publications/Publ-39769 doi:10.14278/rodare.3207 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/rofex url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess sandwich packings two-phase flow ultrafast electron-beam X-ray CT CT image sequences of sandwich packings: B1-250 plus B1-750 at constant liquid rate of 50 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:4192 2025-12-16T13:21:14Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Kriebitzsch, Sebastian Kumaresh, Pramodh Mohite, Onkar Simroth, Patrick Upadhyay, Kartik Hänsch, Susann Draw, Mazen Evdokimov, Ilya Kamble, Vikrant Vinayak Khan, Haris Krull, Benjamin Lehnigk, Ronald Li, Shiwang Liao, Yixiang Lyu, Hongmei Meller, Richard Papagni, Romina Mirdiona Riviera, Elena Schlegel, Fabian Tekavčič, Matej 2025-12-16 This repository contains simulation setups for the Multiphase Code Repository by HZDR for OpenFOAM Foundation Software. The simulation setups are separated into mono- and polydisperse bubbly flows utilising the Baseline model by HZDR set, setups for a morphology-adaptive multifield two-fluid model (disperse and resolved interfaces) and miscellaneous cases.Acknowledgement: OpenFOAM(R) is a registered trade mark of OpenCFD Limited, producer and distributor of the OpenFOAM(R) software via www.openfoam.com. The Multiphase Cases Repository by HZDR for OpenFOAM Foundation Software is not compatible with the software released by OpenCFD Limited, but is based on the software released by the OpenFOAM Foundation via www.openfoam.org https://rodare.hzdr.de/record/4192 10.14278/rodare.4192 oai:rodare.hzdr.de:4192 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 url:https://www.hzdr.de/publications/Publ-32364 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-35412 doi:10.14278/rodare.811 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Baseline model Multi-field two-fluid model Partial elimination algorithm Free Surface Euler-Euler Method Shell Python Gnuplot C++ Multiphase Cases Repository by HZDR for OpenFOAM Foundation Software info:eu-repo/semantics/other software

oai:rodare.hzdr.de:264 2022-12-02T10:03:01Z openaire_data openaire_data openaire_data openaire_data user-ecfunded user-fwd user-hzdr user-rodare

Sommer, Anna-Elisabeth Rox, Hannes Eckert, Kerstin Shi, Pengyu Rzehak, Roland 2020-11-15 A solid-liquid flow in stirred tanks occurs frequently in different branches of process engineering where particles need to be suspended in a liquid. Computational Fluid Dynamics (CFD) simulations of this type of flow on industrial scales are feasible if the closure models implemented therein are appropriate. A large number of closure models exist but, due to a lack of data sources for validation, no systematic assessment of these different models has appeared so far. The present dataset aims to accumulate a comprehensive ''CFD-grade'' database based on experiments on single-phase and two-phase flows in a standardized stirred tank with a diameter of 90 mm. The velocity fields of the liquid phase (deionized water) and, in the two-phase case, the solid phase were measured with Particle Image Velocimetry (PIV) and Particle Shadow Velocimetry (PSV), respectively. The experiments cover a range of parameters to achieve an extensive database. A narrow particle distribution of nearly neutrally buoyant particles (polyethylene spheres), as well as heavy particles (glass spheres) in suspension, are considered over a range of particle diameters (63µm-500µm), solid volume fractions (0.025 vol% - 0.1vol%), as well as impeller rotation speeds (650rpm - 1500rpm). The transient flow field on the plane midway between two baffles was recorded over 50 impeller rotations to achieve statistical significance. The time-averaged (or angle-resolved) mean and fluctuation velocities were then obtained by averaging the transient data in the laboratory frame of reference (or the frame of reference rotating with the impeller). The data is organized and analyzed as described in the corresponding journal publication "Solid-liquid Flow in Stirred Tanks: ”CFD-grade” Experimental Investigation". https://rodare.hzdr.de/record/264 10.14278/rodare.264 oai:rodare.hzdr.de:264 eng info:eu-repo/grantAgreement/EC/H2020/821265/ url:https://www.hzdr.de/publications/Publ-31713 url:https://www.hzdr.de/publications/Publ-31701 doi:10.14278/rodare.263 url:https://rodare.hzdr.de/communities/ecfunded url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode stirred tanks solid-liquid flow Particle Image Velocimetry (PIV) Particle Shadow Velocimetry (PSV) "Computational Fluid Dynamics (CFD)-grade" database "CFD-grade" Experimental data for Solid-liquid Flow in a Stirred Tank info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1830 2023-11-20T12:40:41Z software user-energy user-fwd user-hzdr user-rodare

Hessenkemper, Hendrik Starke, Sebastian Atassi, Yazan Ziegenhein, Thomas Lucas, Dirk 2022-08-05 This package contains the software and the trained models described in the publication "Bubble identification from images with machine learning methods". Please refer to the README.md for installation instructions and to the Prediction_demo.ipynb for usage demonstration. https://rodare.hzdr.de/record/1830 10.14278/rodare.1830 oai:rodare.hzdr.de:1830 eng url:https://www.hzdr.de/publications/Publ-34349 url:https://www.hzdr.de/publications/Publ-34350 doi:10.14278/rodare.1470 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Bubbly flows Deep Learning Computer Vision CNN Semantic segmentation Software for Bubble identification from images with machine learning methods info:eu-repo/semantics/other software

oai:rodare.hzdr.de:2329 2023-11-20T12:40:41Z software user-energy user-fwd user-hzdr user-rodare

Hessenkemper, Hendrik Starke, Sebastian Atassi, Yazan Ziegenhein, Thomas Lucas, Dirk 2022-08-05 This package contains the software and the trained models described in the publication "Bubble identification from images with machine learning methods". Please refer to the README.md for installation instructions and to the Prediction_demo.ipynb for usage demonstration. Update The Prediction_demo.ipynb includes now an example how to prepare the predictions for the tracking algorithm of "Fate of bubble clusters rising in a quiescent liquid". The tracking code can be found here. https://rodare.hzdr.de/record/2329 10.14278/rodare.2329 oai:rodare.hzdr.de:2329 eng url:https://www.hzdr.de/publications/Publ-34349 url:https://www.hzdr.de/publications/Publ-34350 doi:10.14278/rodare.1470 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Bubbly flows Deep Learning Computer Vision CNN Semantic segmentation Software for Bubble identification from images with machine learning methods info:eu-repo/semantics/other software

oai:rodare.hzdr.de:76 2024-08-14T11:29:23Z openaire_data user-fwd user-rodare user-topflow

Schäfer, Thomas Pietruske, Heiko Sprewitz, Uwe Bieberle, André Zippe, Cornelius Hampel, Uwe Neumann, Martin Schäfer, Thomas Bieberle, André Pietruske, Heiko Hampel, Uwe 2019-01-16 In this study the behaviour of gas-liquid two-phase flow inside a centrifugal pump impeller is investigated using ultrafast X-ray computed tomography different rotational speed (1300 rpm, 1480 rpm, 1600 rpm) different inlet gas/liquid fractions different inlet gas-liquid flow regimes (disperse, swirling) The Project was founded by the German Federal Ministry of Education and Research (BMBF) under the funding code 02NUK023B. https://rodare.hzdr.de/record/76 10.14278/rodare.76 oai:rodare.hzdr.de:76 eng url:https://www.hzdr.de/publications/Publ-28666 url:https://www.hzdr.de/publications/Publ-29455 doi:10.14278/rodare.75 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess centrifugal pump two-phase flow investigations ultrafast X-ray computed tomography Ultrafast X-ray tomography data set for the investigation of gas-liquid two-phase flows in an impeller of a centrifugal pump info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:198 2024-08-14T11:26:21Z openaire_data user-hzdr user-fwd user-rodare user-topflow

Neumann-Kipping, Martin Hampel, Uwe Bieberle, André Neumann-Kipping, Martin Hampel, Uwe 2019-12-01 For the investigation of bubbly two-phase flow, which should serve as a future benchmark experiment for CFD code validation, an experimental study has been conducted at the Transient Two-Phase Flow (TOPFLOW) facility at Helmholtz-Zentrum Dresden – Rossendorf (HZDR) using ultrafast electron beam X-ray tomography (UFXRAY). In this study, flow constrictions were installed into a pipe to create a generic three-dimensional flow field as an advanced test case for CFD codes. UFXRAY provide valueable data of the gas phase dynamics with high temporal and spatial resolution. The provided data set contains the entire results of the experimental series L32 that uses a ring-shaped flow constriction with a blockage ratio of 0.5. An additional info.txt file provides all required information (e.g. nomenclature or binary file structure) and is, thus, necessary for interpretation of the experimental data. This work is funded by the German Federal Ministry for Economic Affairs and Energy (BMWi) with the grant number 1501481 on the basis of a decision by the German Bundestag. https://rodare.hzdr.de/record/198 10.14278/rodare.198 oai:rodare.hzdr.de:198 eng doi:10.14278/rodare.124 doi:10.14278/rodare.139 doi:10.14278/rodare.122 doi:10.14278/rodare.137 doi:10.14278/rodare.1195 url:https://www.hzdr.de/publications/Publ-29886 doi:10.14278/rodare.197 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess ultrafast X-ray computed tomography bubbly two-phase flow three-dimensional flow field two-phase pipe flow flow constriction experimental benchmark data Hydrodynamic experimental benchmark data of bubbly two-phase pipe flow around a ring-shaped constriction info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:2336 2024-02-22T11:56:49Z user-rodare user-hzdr user-fwd

Maestri, Rhandrey Bürkle, Florian Ding, Wei Büttner, Lars Czarske, Jürgen Hampel, Uwe Lecrivain, Gregory 2023-06-20 Data used in the article Equilibrium Taylor bubble in a narrow vertical tube with constriction. Compressed in the 7Z File: Data: Values used for bubble velocity in Fig. 4 and values extracted from the wall shape in the different tubes; Figures: All figures used in the publication; Videos: Videos in mp4 or avi. This work was supported by the German Research Foundation (Deutsche Forschungsgemeinschaft) under the project number 459505672 https://rodare.hzdr.de/record/2336 10.14278/rodare.2336 oai:rodare.hzdr.de:2336 eng url:https://www.hzdr.de/publications/Publ-37133 url:https://www.hzdr.de/publications/Publ-37123 doi:10.14278/rodare.2335 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Gas–liquid flow Taylor bubble Flow blockage Channel constriction Data publication: Equilibrium Taylor bubble in a narrow vertical tube with constriction info:eu-repo/semantics/other video

oai:rodare.hzdr.de:874 2021-03-12T07:22:00Z openaire_data user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Simulationsdaten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie - Simulationsdaten für den ROFEX 1 zum Vergleich unterschiedlicher Detektorgrößen mit dem USRBIN-Kommando https://rodare.hzdr.de/record/874 10.14278/rodare.874 oai:rodare.hzdr.de:874 deu url:https://www.hzdr.de/publications/Publ-32400 url:https://www.hzdr.de/publications/Publ-32417 doi:10.14278/rodare.873 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess Electron beam Beam position FLUKA ROFEX Data (15/15) for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1654 2022-06-07T07:08:46Z openaire_data user-fwd user-rodare

Windisch, Dominic 2022-06-03 This dataset holds the subset of benchmark results relevant for the publication "Real-time data processing for Ultrafast X-Ray Computed Tomography using Modular CUDA based Pipelines". Alongside the data, Matlab scripts are provided for parsing and plotting the data. https://rodare.hzdr.de/record/1654 10.14278/rodare.1654 oai:rodare.hzdr.de:1654 url:https://www.hzdr.de/publications/Publ-34743 url:https://www.hzdr.de/publications/Publ-34747 doi:10.14278/rodare.1653 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Benchmark results for real-time UFXCT data processing info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:292 2024-08-19T13:15:04Z openaire_data user-fwd user-rodare user-topflow

Barthel, Frank Sprewitz, Uwe Bieberle, Martina Bieberle, André Gundrum, Thomas Räbiger, Dirk Eckert, Sven Neumann-Kipping, Martin Bieberle, André 2020-04-16 For investigations on Argon gas bubbles in liquid Sodium ultrafast electron beam X-ray computed tomography is applied. The repository comprises imaging data obtained at different heights of the test facility and various gas volume rates. The CT scanner is operated in dual-plane mode with a deflection frequency of 2 kHz for approximately 30s. - hup-Files: binary files containing the gas holdup data stack (256 x 256 x 29826) of each CT scanning plane - mat-Files: workspace files containing additional information, e.g. the binarized gas holdup stacks of both CT scanning planes and properties of tracked gas bubbles (number of pixel, center of weight, etc.) - Data processing can be found in the corresponding GITLAB repository. https://rodare.hzdr.de/record/292 10.14278/rodare.292 oai:rodare.hzdr.de:292 eng url:https://www.hzdr.de/publications/Publ-30915 url:https://www.hzdr.de/publications/Publ-37535 doi:10.14278/rodare.291 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode ultrafast X-ray CT gas-liquid two-phase flow Argon gas flow investigations in liquid Sodium using ultrafast electron beam X-ray computed tomography (NaFEX) - Data set info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:860 2021-03-15T08:18:59Z openaire_data user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Simulationsdaten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie Untersuchung des Einflusses verschiedener USRBDX-Strukturen auf den Elektronenfluss. https://rodare.hzdr.de/record/860 10.14278/rodare.860 oai:rodare.hzdr.de:860 deu url:https://www.hzdr.de/publications/Publ-32400 url:https://www.hzdr.de/publications/Publ-32410 doi:10.14278/rodare.859 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess ROFEX FLUKA Electron beam Beam position Data (8/15) for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:838 2021-03-11T07:48:19Z openaire_data user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Simulationsdaten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie Daten für den ROFEX 3: - Pos_17 bzw. Pos_19 wurden zur Bestimmung des Gleichungssystems Elektronenfluss(r, phi) verwendet - groessenvgl diente dem Vergleich verschiedener USRBIN-Größen bei den ROFEX-3-Simulationen - USRBIN70_Ro3 zeigte den Elektronenfluss an einer weiteren Detektorposition - 66_21_Ro3 untersuchte einen leicht verschobenen USRBIN 66. Daten für den ROFEX 1: -Ro1_USRBIN_gekippt wurde für den Vergleich von USRBINs mit unterschiedlichen Winkeln verwendet https://rodare.hzdr.de/record/838 10.14278/rodare.838 oai:rodare.hzdr.de:838 deu url:https://www.hzdr.de/publications/Publ-32400 url:https://www.hzdr.de/publications/Publ-32403 doi:10.14278/rodare.837 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess ROFEX FLUKA Electron beam Beam position Data (1/15) for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:846 2021-03-15T08:14:02Z user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Auswertungen der Daten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie Die *.txt-Dateien sind die Ergebnisse von Python-Skripten zur Positionsabschätzung am ROFEX 1. https://rodare.hzdr.de/record/846 10.14278/rodare.846 oai:rodare.hzdr.de:846 deu url:https://www.hzdr.de/publications/Publ-32401 url:https://www.hzdr.de/publications/Publ-32400 doi:10.14278/rodare.845 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess Electron beam ROFEX Beam position Results for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other other

oai:rodare.hzdr.de:836 2021-03-15T08:15:25Z software user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-08 Skripte und FLUKA-Eingangsdateien ohne Strahlposition für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie README_* beschreibt die Dateien https://rodare.hzdr.de/record/836 10.14278/rodare.836 oai:rodare.hzdr.de:836 deu url:https://www.hzdr.de/publications/Publ-32402 url:https://www.hzdr.de/publications/Publ-32400 doi:10.14278/rodare.835 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess FLUKA ROFEX Electron beam Beam position Scripts for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other software

oai:rodare.hzdr.de:1272 2021-11-25T12:42:59Z user-fwd user-hzdr user-rodare

Pizzi, Federico Giesecke, André Simkanin, Jan Stefani, Frank 2021-11-25 This dataset included the data and figures for the associated publication "Prograde and retrograde precession of a fluid-filled cylinder". https://rodare.hzdr.de/record/1272 10.14278/rodare.1272 oai:rodare.hzdr.de:1272 url:https://www.hzdr.de/publications/Publ-33455 url:https://www.hzdr.de/publications/Publ-33464 doi:10.14278/rodare.1271 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode precession core flow dynamo instability transition Data publication: Prograde and retrograde precession of a fluid-filled cylinder info:eu-repo/semantics/other other

oai:rodare.hzdr.de:3068 2025-03-03T14:05:46Z openaire_data user-ecfunded user-energy user-fwd user-rodare

Nash, William Sarma, Martins Lappan, Tobias Trtik, Pavel Solem, Cathrine K. W. Wang, Zhaohui Beltran, Alberto Weber, Norbert Weier, Tom 2024-07-29 Data and source code accompanying the publication Nash et al. (2024) Neutron imaging of high-temperature Na-Zn Cells: implications for cell design and fabrication. For the purposes of reproducing volume integration and self-discharge current calculations. https://rodare.hzdr.de/record/3068 10.14278/rodare.3068 oai:rodare.hzdr.de:3068 eng info:eu-repo/grantAgreement/EC/H2020/963599/ url:https://www.hzdr.de/publications/Publ-39369 url:https://www.hzdr.de/publications/Publ-39367 doi:10.14278/rodare.3067 url:https://rodare.hzdr.de/communities/ecfunded url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode liquid metal batteries SOLSTICE neutron imaging Data publication: Diaphragm performance of high-temperature Na-Zn cells evaluated by Neutron Imaging info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1133 2025-12-19T07:35:41Z software user-openfoam user-fwd user-hzdr user-energy user-rodare

Couteau, Arthur Colombo, Marco Kriebitzsch, Sebastian Parekh, Jigar Schlegel, Fabian Draw, Mazen Evdokimov, Ilya Hänsch, Susann Khan, Harris Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gašper Tekavčič, Matej 2021-08-23 The HZDR multiphase addon contains additional code for the open-source CFD software OpenFOAM, released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method). Within the OpenFOAM library the multiphaseEulerFoam framework is used for this type of simulation. The addon contains a modified multiphaseEulerFoam named HZDRmultiphaseEulerFoam with the full support of the HZDR baseline model set for polydisperse bubbly flows according to Liao et al. (Chem Eng Sci, 2019, Vol. 202, 55-69). In addition a solver dedicated to a hybrid modelling approach (dispersed and resolved interfaces, Meller et al., Int J Numer Meth Fluids. 2021, Vol. 93, 748-773) named cipsaMultiphaseEulerFoam is provided with the addon. This solver has an interface to the multiphaseEulerFoam framework and utilizes all available interfacial models of it. General enhancements modified turbulent wall functions of Menter according to Rzehak and Kriebitzsch (Int J Multiphase Flow, 2015, Vol. 68, 135-152) dynamic time step adjustment via PID controller HZDRmultiphaseEulerFoam bubble induced turbulence model of Ma et al. (Phys Rev Fluids, 2017, Vol. 2, 034301) drag model of Ishii and Zuber (AIChE Journal, 1979, Vol. 25, 843-855) without correction for swarm and/or viscous effects wall lubrication of Hosokawa et al. (ASME Joint US-European Fluids Engineering Division Conference, 2002) additional breakup and coalescence models for class method according to Liao et al. (Chem Eng Sci, 2015, Vol. 122, 336-349) degassing boundary condition (fvModel) lift force correlation of Hessenkemper et al. (Int J Multiphase Flow, 2021, Vol. 138, 103587) aspect ratio correlation of Ziegenhein and Lucas (Exp. Therm. Fluid Sci., 2017, Vol. 85, 248–256) real pressure treatment via explicit turbulent normal stress according to Rzehak et al. (Nucl Eng Des., 2021, Vol. 374, 111079) configuration files and tutorials for easy setup of baseline cases GPU-based accelerated computation of coalescence and breakup frequencies for the models of Lehr et al., AIChE J, 2002, Vol. 48, 2426-2443 (Petelin et al., NENE2021 conf., submitted) cipsaMultiphaseEulerFoam morphology adaptive modelling framework for predicting dispersed and resolved interfaces based on Eulerian multi-field two-fluid model compact momentum interpolation method according to Cubero et al. (Comput Chem Eng, 2014, Vol. 62, 96-107), including virtual mass numerical drag according to Strubelj and Tiselj (Int J Numer Methods Eng, 2011, Vol. 85, 575-590) to describe resolved interfaces in a volume-of-fluid like manner n-phase partial elimination algorithm for momentum equations to resolve strong phase coupling (Meller et al., Int J Numer Meth Fluids. 2021, Vol. 93, 748-773) free surface turbulence damping for k-ω SST (symmetric and asymmetric damping, Frederix et al., Nucl Eng Des, 2018, Vol. 333, 122-130) sub-grid scale modelling framework: additional LES models for the unclosed convective sub-grid scale term closure models for sub-grid surface tension term configuration files and tutorials for easy setup of hybrid cases This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)" https://rodare.hzdr.de/record/1133 10.14278/rodare.1133 oai:rodare.hzdr.de:1133 eng url:https://www.hzdr.de/publications/Publ-32194 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM CFD Finite volume method Baseline model Multi-field two-fluid model Eulerian-Eulerian model Momentum interpolation Partial elimination algorithm Free Surface HZDR Multiphase Addon for OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:1742 2025-12-19T07:35:42Z software user-openfoam user-fwd user-hzdr user-energy user-rodare

Couteau, Arthur Colombo, Marco Kriebitzsch, Sebastian Parekh, Jigar Zhang, Tingting Schlegel, Fabian Bilde, Kasper Gram Draw, Mazen Evdokimov, Ilya Hänsch, Susann Kamble, Vikrant Vinayak Khan, Harris Krull, Benjamin Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gašper Tekavčič, Matej 2022-06-21 The HZDR Multiphase Addon is a software publication released by Helmholtz-Zentrum Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, Interoperability, and Reuseability). It contains experimental research work for the open-source CFD software OpenFOAM, released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method). Within the OpenFOAM library the multiphaseEulerFoam framework is used for this type of simulation. The addon contains a modified solver named HZDRmultiphaseEulerFoam with the full support of the HZDR baseline model set for polydisperse bubbly flows. In addition a solver dedicated to a hybrid modelling approach (dispersed and resolved interfaces, Meller, Schlegel and Lucas, 2021) named cipsaMultiphaseEulerFoam is provided with the addon. This solver has an interface to the multiphaseEulerFoam framework and utilizes all available interfacial models of it. General enhancements modified turbulent wall functions of Menter according to Rzehak and Kriebitzsch (2015) dynamic time step adjustment via PID controller HZDRmultiphaseEulerFoam bubble induced turbulence model of Ma et al. (2017) drag model of Ishii and Zuber (1979) without correction for swarm and/or viscous effects wall lubrication model of Hosokawa et al. (2002) additional breakup and coalescence models for class method according to Kusters (1991) and Adachi et al. (1994) degassing boundary condition (fvModel) lift force correlation of Hessenkemper et al. (2021) lift force correlation of Saffman (1965) as extended by Mei (1992). aspect ratio correlation of Ziegenhein and Lucas (2017) real pressure treatment via explicit turbulent normal stress according to Rzehak et al. (2021) GPU-based accelerated computation of coalescence and breakup frequencies for the models of Lehr et al. (2002) (Petelin et al., 2021) configuration files and tutorials for easy setup of baseline cases according to Hänsch et al. (2021) cipsaMultiphaseEulerFoam morphology adaptive modelling framework for predicting dispersed and resolved interfaces based on Eulerian multi-field two-fluid model compact momentum interpolation method according to Cubero et al. (2014), including virtual mass numerical drag according to Strubelj and Tiselj (2011) to describe resolved interfaces in a volume-of-fluid like manner n-phase partial elimination algorithm for momentum equations to resolve strong phase coupling (Meller, Schlegel and Lucas, 2021) free surface turbulence damping (Frederix et al., 2018) for k-ω SST - symmetric and asymmetric - according to Tekavčič et al. (2021) sub-grid scale modelling framework (Meller, Schlegel and Klein, 2021) additional LES models for the unclosed convective sub-grid scale term closure models for sub-grid surface tension term configuration files and tutorials for easy setup of hybrid cases This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)" https://rodare.hzdr.de/record/1742 10.14278/rodare.1742 oai:rodare.hzdr.de:1742 eng url:https://www.hzdr.de/publications/Publ-32194 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32161 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM CFD Finite volume method Baseline model Multi-field two-fluid model Eulerian-Eulerian model Momentum interpolation Partial elimination algorithm Free Surface HZDR Multiphase Addon for OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:1869 2025-12-19T07:35:42Z software user-openfoam user-fwd user-hzdr user-energy user-rodare

Couteau, Arthur Colombo, Marco Kriebitzsch, Sebastian Kumaresh, Pramodh Parekh, Jigar Zhang, Tingting Schlegel, Fabian Bilde, Kasper Gram Draw, Mazen Evdokimov, Ilya Hänsch, Susann Kamble, Vikrant Vinayak Khan, Harris Krull, Benjamin Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gašper Tekavčič, Matej Kota, Sesi Preetam 2022-10-14 The HZDR Multiphase Addon is a software publication released by Helmholtz-Zentrum Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, Interoperability, and Reuseability). It contains experimental research work for the open-source CFD software OpenFOAM, released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method). Highlights of the provided addon are: HZDR Baseline Model: HZDRMultiphaseEulerFoam solver with full support of the HZDR baseline model set for polydisperse bubbly flows, including configuration files and tutorials for simplified setup of Baseline cases (Hänsch et al., 2021). Population Balance Modelling: A GPU-accelerated population balance method according to Petelin et al. (2021). OpenFOAM-Hybrid cipsaMultiphaseEulerFoam solver featuring a hybrid modelling approach (dispersed and resolved interfaces, Meller et al., 2021) with an interface to the multiphaseEulerFoam framework to utilise all available interfacial models, and configuration files and tutorials for easy setup of hybrid cases. more ... This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)" https://rodare.hzdr.de/record/1869 10.14278/rodare.1869 oai:rodare.hzdr.de:1869 eng url:https://www.hzdr.de/publications/Publ-32194 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32161 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Finite volume method Baseline model Multi-field two-fluid model Euler-Euler method Momentum interpolation Partial elimination algorithm Free Surface Flows HZDR Multiphase Addon for OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:3284 2025-12-19T07:35:42Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Colombo, Marco Haßlberger, Josef Kriebitzsch, Sebastian Kumaresh, Pramodh Parekh, Jigar Zhang, Tingting Wang, Chih-Ta Wang, Lisong Schlegel, Fabian Bilde, Kasper Gram Draw, Mazen Evdokimov, Ilya Hänsch, Susann Kamble, Vikrant Vinayak Khan, Haris Krull, Benjamin Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gasper Kota, Sesi Preetam Tekavcic, Matej 2024-11-29 The Multiphase Code Repository by HZDR for OpenFOAM Foundation Software is a software publication released by Helmholtz-Zentrum Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, Interoperability, and Reuseability). It contains experimental research work for the open-source software released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method).Acknowledgement: OpenFOAM(R) is a registered trade mark of OpenCFD Limited, producer and distributor of the OpenFOAM(R) software via www.openfoam.com. The Multiphase Code Repository by HZDR for OpenFOAM Foundation Software is not compatible with the software released by OpenCFD Limited, but is based on the software released by the OpenFOAM Foundation via www.openfoam.orgHighlights of the Multiphase Code Repository by HZDRHZDR Baseline Model: addonMultiphaseEuler solver with full support of the HZDR baseline model set for polydisperse bubbly flows, including configuration files and tutorials for simplified setup of Baseline cases (Hänsch et al., 2021).Morphology-adaptive Multifield Two-fluid Model (MultiMorph): cipsaMultiphaseEuler solver featuring a morphology-adaptive modelling approach (dispersed and resolved interfaces, Meller et al., 2021) with an interface to the multiphaseEuler framework to utilise all available interfacial models, and configuration files and tutorials for easy setup of cases with the MultiMorph Model.more ... https://rodare.hzdr.de/record/3284 10.14278/rodare.3284 oai:rodare.hzdr.de:3284 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 doi:10.14278/rodare.198 url:https://www.hzdr.de/publications/Publ-29886 url:https://www.hzdr.de/publications/Publ-32194 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-35412 url:https://www.hzdr.de/publications/Publ-36249 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Finite volume method Baseline model Multi-field two-fluid model Euler-Euler method Momentum interpolation Partial elimination algorithm Free Surface Flows C++ C CUDA Shell Python Gnuplot Multiphase Code Repository by HZDR for OpenFOAM Foundation Software info:eu-repo/semantics/other software

oai:rodare.hzdr.de:125 2024-08-14T11:28:26Z openaire_data user-fwd user-rodare user-topflow

Neumann-Kipping, Martin Hampel, Uwe Bieberle, André Beyer, Matthias Sprewitz, Uwe Szalinski, Lutz Neumann-Kipping, Martin Hampel, Uwe 2019-06-18 For the investigation of bubbly two-phase flow, which should serve as a future benchmark experiment for CFD code validation, an experimental study has been conducted at the Transient Two-Phase Flow (TOPFLOW) facility at Helmholtz-Zentrum Dresden – Rossendorf (HZDR) using ultrafast electron beam X-ray tomography (UFXRAY). In this study, flow constrictions were installed into a pipe to create a generic three-dimensional flow field as an advanced test case for CFD codes. UFXRAY provide valueable data of the gas phase dynamics with high temporal and spatial resolution. The provided data set contains tomography raw-data for the experimental series L30 that uses a ring shaped flow constriction with a blockage ratio of 0.5. For visualization, the data might be opend with Fiji. Therefore choose Import->Raw... In the following window specify "Image type" as 16-bit Unsigned, "Width" as 288 pixels and "Height" as 500 pixels for 2x1000Hz measurement or 200 pixels for 2x2500Hz measurement. Make sure that "Little-endian byte order" is checked. A data set contains image frames of both scanning planes in alternating order. Therefore, if only a single scanning plane is required, the offset and gap parameters need to be set to 288000 bytes for 2x1000Hz measurement or 115200 bytes for 2x2500Hz measurement. This work is funded by the German Federal Ministry for Economic Affairs and Energy (BMWi) with the grant number 1501481 on the basis of a decision by the German Bundestag. https://rodare.hzdr.de/record/125 10.14278/rodare.125 oai:rodare.hzdr.de:125 eng doi:10.14278/rodare.139 doi:10.14278/rodare.197 doi:10.14278/rodare.122 doi:10.14278/rodare.137 doi:10.14278/rodare.195 doi:10.14278/rodare.124 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess ultrafast X-ray computed tomography bubbly two-phase flow three-dimensional flow field two-phase pipe flow Ultrafast X-ray tomography raw-data of bubbly two-phase pipe flow around a ring-shaped constriction info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:864 2021-03-15T08:19:29Z openaire_data user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Simulationsdaten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie Untersuchung des Einflusses verschiedener USRBDX-Strukturen auf den Elektronenfluss. https://rodare.hzdr.de/record/864 10.14278/rodare.864 oai:rodare.hzdr.de:864 deu url:https://www.hzdr.de/publications/Publ-32400 url:https://www.hzdr.de/publications/Publ-32412 doi:10.14278/rodare.863 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess FLUKA ROFEX Electron beam Beam position Data (10/15) for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:786 2024-08-14T10:40:24Z openaire_data user-fwd user-rodare user-topflow

Döß, Alexander Schubert, Markus Wiedemann, Philipp Schleicher, Eckhard Hampel, Uwe 2021-01-29 This data set is a supplementory to 'Dataset for: Flow morphologies in straight and bent horizontal pipes'. In addition to the void files (.v) given in the primary data sets we provide: - Underlying uncalibrated measurements files (.dat, .dati) - .log files for the corresponding .v-files - Calibration measurements - Geometry files for the used Wire-mesh sensors https://rodare.hzdr.de/record/786 10.14278/rodare.786 oai:rodare.hzdr.de:786 doi:10.14278/rodare.784 url:https://www.hzdr.de/publications/Publ-32249 doi:10.14278/rodare.785 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Flow morphologies Horizontal Two-phase flow Wire-mesh sensor TERESA Dataset for: Flow morphologies in straight and bent horizontal pipes (uncalibrated measurement files) info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3218 2024-10-22T08:18:13Z openaire_data user-fwd user-hzdr user-rodare

Souza, Lucas Santos, Andre Azpurua, Hector Resende Filho, Levi Domingues, Jaco Matos, Saulo Nyarko, Samuel Melo Euzebio, Thiago Antonio Pessin, Gustavo 2024-10-22 The data contains the analysis results of the research work. https://rodare.hzdr.de/record/3218 10.14278/rodare.3218 oai:rodare.hzdr.de:3218 url:https://www.hzdr.de/publications/Publ-39738 url:https://www.hzdr.de/publications/Publ-39536 doi:10.14278/rodare.3217 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Object Detection Instance Segmentation Deep Learning Particle Size Measurement Crushing Circuit Data publication: Exploiting Deep Learning Models for Iron Ore Particle Size Estimation in the Primary Crusher Input info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3583 2025-10-01T11:26:42Z openaire_data user-rodare user-fwd user-hzdr

Skrypnik, Artem Knüpfer, Leon Trtik, Pavel Lappan, Tobias Ziauddin, Muhammad Heitkam, Sascha 2025-02-26 The structure of liquid foam is generally considered random and isotropic. However, when foam flows past a set of wires, an inhomogeneous liquid fraction distribution, or layering, can be observed within the bulk. This dataset presents neutron radiography data of foam flowing past a set of thin metal wires. During the experiments, the gas flow rate and bubble size were varied. Additionally, a dataset for foam flow past a single wire is included for reference. The folder includes initial data for the manuscript "Generating structured foam via flowing through a wire array". Folder includes: 01_scripts scripts used for the data processing 02_rawdata Initial neutron imaging data (.tif images) 03_evaluation folder with MATLAB scripts used for data analysis LABBOOK Experimental labbook explaining the experimental sequence. Protocol The Neutron imaging protocol with the data of neutron source and image resolution The data processing is shown for the O1 bubble generator. It includes: 1. MASK_... script used to define the cell walls and determine the mask, used further for the liquid fraction calculation. 2. N13_INIT... scritps to define normalised image, which further used to determine liquid fraction distribution 3. POST_BOT... scripts used to postprocess the data: define Liquid fraction distribution and DFT of those distributions. Note: 1. The data were analysed at two positions: bottom (0) and top (100), meaining at the wire grid and 100 mm downstream the grid. To this end, mask should be calculated also for the top part of the nozzle, if needed, as shown in the presented examples. 2. The data for the empty cell were calculated for the foam flow through the cell with a single thin wire. The data were extracted in the ROI before the wire (run 553-557). 3. Data processing was performed as suggested in https://doi.org/10.1371/journal.pone.0210300 The authors gratefully acknowledge the financial support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation, under grant number HE 7529/3-1, project number 431077191). This work is based on experiments (beam-time proposal number 20240273) performed at the NEUTRA instrument of the Swiss spallation neutron source SINQ, Paul Scherrer Institute, Villigen, Switzerland. https://rodare.hzdr.de/record/3583 10.14278/rodare.3583 oai:rodare.hzdr.de:3583 eng url:https://www.hzdr.de/publications/Publ-41043 url:https://www.hzdr.de/publications/Publ-41037 doi:10.14278/rodare.3582 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Foam Neutron imaging Radiography Data publication: Generating structured foam via flowing through a wire array info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1274 2024-08-08T10:35:05Z openaire_data user-fwd user-fwg user-rodare user-elbe

Akashi, Megumi Eckert, Sven 2021-11-25 There are images of bubbles in the liquid metal obtained through X-ray radiography. Bubbles are injected by a top-submerged lance. Experiments were performed in ELBE in HZDR. https://rodare.hzdr.de/record/1274 10.14278/rodare.1274 oai:rodare.hzdr.de:1274 url:https://www.hzdr.de/publications/Publ-32494 url:https://www.hzdr.de/publications/Publ-33465 doi:10.14278/rodare.1273 url:https://rodare.hzdr.de/communities/elbe url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/fwg url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Algorithm X two-phase flow bubble dynamics liquid metal X-ray radiography neutron imaging image processing Data publication: MHT-X: Offline Multiple Hypothesis Tracking with Algorithm X info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3617 2025-04-01T09:04:17Z openaire_data user-energy user-hzdr user-fwd user-rodare

Bashkatov, Aleksandr Bürkle, Florian Demirkır, Çayan Ding, Wei Sanjay, Vatsal Babich, Alexander Yang, Xuegeng Mutschke, Gerd Czarske, Jürgen Lohse, Detlef Krug, Dominik Büttner, Lars Eckert, Kerstin 2025-03-07 Description of Data availability.zip: The archive contains raw data necessary for reproducing all figures presented in the manuscript submitted as Electrolyte spraying within H2 bubbles during water electrolysis (also available as a pre-print at https://doi.org/10.48550/arXiv.2409.00515). Each folder within the archive includes a readme file detailing data included (e.g. images, electrochemical data, or velocity fields). This research received funding from the German Space Agency (DLR), with funds provided by the Federal Ministry of Economics and Technology (BMWi) due to an enactment of the German Bundestag under Grant No. DLR 50WM2352 (project MADAGAS III), H2Giga (BMBF, 03HY123E), from the Hydrogen Lab of the School of Engineering of TU Dresden, from the Advanced Research Center Chemical Building Blocks Consortium (ARC CBBC), under the project of New Chemistry for a Sustainable Future (project number 2021.038.C.UT.14) and partially from the German Research Foundation (DFG, project number 459505672). https://rodare.hzdr.de/record/3617 10.14278/rodare.3617 oai:rodare.hzdr.de:3617 eng doi:10.48550/arXiv.2409.00515 url:https://www.hzdr.de/publications/Publ-41084 url:https://www.hzdr.de/publications/Publ-41170 doi:10.14278/rodare.3616 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode raw data electrolysis bubble dynamics hydrogen Worthington jet droplets injection end-pinching Marangoni effect internal flow electrolyte spraying hydrogen evolution reaction Data publication: Electrolyte spraying within H2 bubbles during water electrolysis info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:848 2021-03-12T07:20:23Z openaire_data user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Simulationsdaten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie Pos_17* enthält die Elektronenflusssimulationen für den ROFEX 3 mit EMFCUT=10keV https://rodare.hzdr.de/record/848 10.14278/rodare.848 oai:rodare.hzdr.de:848 deu url:https://www.hzdr.de/publications/Publ-32400 url:https://www.hzdr.de/publications/Publ-32405 doi:10.14278/rodare.847 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess ROFEX Electron beam FLUKA Beam position Data (3/15) for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1813 2022-08-04T09:43:06Z openaire_data user-hzdr user-fwd user-matter user-rodare

Schindler, Felix Eckert, Sven Zürner, Till Schumacher, Jörg Vogt, Tobias 2022-07-21 Rawdata on which the publication is based on. .BDD binary files for Ultrasound measurements. .dat: direct temperature measurement data. https://rodare.hzdr.de/record/1813 10.14278/rodare.1813 oai:rodare.hzdr.de:1813 eng doi:10.1103/PhysRevLett.128.164501 url:https://www.hzdr.de/publications/Publ-34082 url:https://www.hzdr.de/publications/Publ-34142 doi:10.14278/rodare.1812 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/matter url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Rayleigh-Benard Convection liquid metal low Pr cylinder Aspect Ratio 0.5 Ultrasound Doppler Velocimetry Data publication: Collapse of Coherent Large Scale Flow in Strongly Turbulent Liquid Metal Convection info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3226 2024-11-12T10:18:29Z openaire_data user-fwd user-hzdr user-rodare user-rofex user-topflow

Barthel, Frank Sohr, Johanna Sprewitz, Uwe Schubert, Markus Bieberle, André Sohr, Johanna Barthel, Frank Sprewitz, Uwe Schubert, Markus 2024-11-12 This repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-1000 (specific geometric surface area is 1000 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files. https://rodare.hzdr.de/record/3226 10.14278/rodare.3226 oai:rodare.hzdr.de:3226 eng url:https://www.hzdr.de/publications/Publ-39876 doi:10.14278/rodare.3225 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/rofex url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess sandwich packing two-phase flow ultrafast electron beam X-ray computed tomography CT image sequences of sandwich packings: B1-250 plus B1-1000 at constant liquid rate of 10 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:218 2024-08-14T10:46:06Z openaire_data user-fwd user-hzdr user-rodare user-topflow

Bieberle, Martina Neumann-Kipping, Martin Wolf, Jan Hampel, Uwe Bieberle, André Schäfer, Thomas 2020-01-07 This data repository contains reconstructed and quantitatively analyzed gas-liquid two-phase distributions obtained from a centrifugal pump mock-up whose geometry is related to a commercially available industrial centrifugal pump. As measurement system the ultrafast electron beam X-ray CT scanner (UFXCT) is applied with a frame rate of 2,500 Hz, single-plane mode and a total scanning interval of 5 seconds. The data repository contains: Reconstructed raw data sets (Algebraic Reconstruction Technique from the UFO framework) for different inlet gas fractions (eps0.0xx) at constant 1600 rpm and for both rotating and back-rotated impeller positions, respectively Extracted RPM per CT scan (frame) including its raw data Extracted angular positions of the impeller mock-up per frame Calculated quantitative gas fraction data sets (static impeller position) Time-averaged gas fraction distribution and its corresponding averaged variance Pump and impeller mask data Additional data obtained from the SPS server with a sampling frequency of 1 Hz Data is stored in HDF5 format. https://rodare.hzdr.de/record/218 10.14278/rodare.218 oai:rodare.hzdr.de:218 eng doi:10.14278/rodare.76 doi:10.1115/1.4045497 url:https://www.hzdr.de/publications/Publ-30371 doi:10.14278/rodare.217 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess centrifugal pump gas-liquid two-phase flow ultrafast electron beam X-ray computed tomography Gas-liquid two-phase flow in a centrifugal pump mock-up with disperse gas flow injection at 1600 rpm info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1764 2024-08-14T10:31:26Z openaire_data user-fwd user-rodare user-topflow

Bieberle, André Loll, Rouven Pyka, Tobias Schubert, Markus 2022-07-08 For liquid fraction investigations in a rotating packed bed (RPB) angular-resolved time-averaged gamma-ray computed tomography (GammaCT) is applied. Liquid is injected via different inlet geometries. This repository mainly contains the reconstructed CT data for the following configurations: solid foam, 12 baffle liquid inlet solid foam, 32 baffle liquid inlet solid foam, single point liquid inlet printed small zick-zack foam, multi point liquid inlet printed small zick-zack foam, zero point liquid inlet printed big zick-zack foam, multi point liquid inlet Furthermore, the corresponding restructured sinogram raw data are included as well as diverse radiographic scans from different foam geometries that are used to arrange the RPB disc and the CT scanning plane as planar as possible and to define the vertically distributed scanning planes within the foams. https://rodare.hzdr.de/record/1764 10.14278/rodare.1764 oai:rodare.hzdr.de:1764 eng url:https://codebase.helmholtz.cloud/fwdf/measurementscience/projects/gammact/TuDo2 url:https://www.hzdr.de/publications/Publ-34851 url:https://www.hzdr.de/publications/Publ-36827 url:https://www.hzdr.de/publications/Publ-37443 url:https://www.hzdr.de/publications/Publ-38570 url:https://www.hzdr.de/publications/Publ-36752 url:https://www.hzdr.de/publications/Publ-36753 doi:10.14278/rodare.1763 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Rotating Packed Bed Process Intensivation Computed Tomography Liquid fraction investigations in a RPB with different foam and liquid inlet geometries using GammaCT info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1925 2025-12-16T12:53:36Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Kriebitzsch, Sebastian Kumaresh, Pramodh Mohite, Onkar Upadhyay, Kartik Hänsch, Susann Draw, Mazen Evdokimov, Ilya Khan, Haris Krull, Benjamin Lehnigk, Ronald Liao, Yixiang Lyu, Hongmei Meller, Richard Schlegel, Fabian Tekavčič, Matej 2022-10-28 HZDR Multiphase Case Collection for OpenFOAM contains simulation setups for the open-source CFD software OpenFOAM extended by the HZDR Multiphase Addon for OpenFOAM. The simulation setups are separated into mono- and polydisperse bubbly flows utilising the HZDR Baseline model set, setups for a hybrid modelling approach (disperse and resolved interfaces) and miscellaneous cases. This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)". https://rodare.hzdr.de/record/1925 10.14278/rodare.1925 oai:rodare.hzdr.de:1925 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-32364 doi:10.14278/rodare.811 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Baseline model Multi-field two-fluid model Partial elimination algorithm Free Surface Euler-Euler Method Shell Python Gnuplot C++ HZDR Multiphase Case Collection for OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:1471 2023-11-20T12:40:40Z software user-energy user-fwd user-hzdr user-rodare

Hessenkemper, Hendrik Starke, Sebastian Atassi, Yazan Ziegenhein, Thomas Lucas, Dirk 2022-03-07 This package contains the software and the trained models described in the publication "Bubble identification from images with machine learning methods". Please refer to the README.md for installation instructions and to the Prediction_demo.ipynb for usage demonstration. https://rodare.hzdr.de/record/1471 10.14278/rodare.1471 oai:rodare.hzdr.de:1471 eng url:https://www.hzdr.de/publications/Publ-34349 url:https://www.hzdr.de/publications/Publ-34350 doi:10.14278/rodare.1470 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Bubbly flows Deep Learning Computer Vision CNN Semantic segmentation Software for Bubble identification from images with machine learning methods info:eu-repo/semantics/other software

oai:rodare.hzdr.de:2326 2024-07-01T12:31:35Z software user-rodare user-fwd user-energy

Lecrivain, Gregory 2023-06-07 Source code associated with publication entitled "Self-folding of two-dimensional thin templates into pyramidal micro-structures by a liquid drop - a numerical model" src.tar.gz: c++ source code scripts.tar.gz: figures manuscript.tar.gz: text ca70_side5_ec2.0.tar.gz: Simulation data obtained for Ca=70 deg, N = 5 and Ec = 2 ca90_side5_ec2.0.tar.gz: Simulation data obtained for Ca=90 deg, N = 5 and Ec = 2 https://rodare.hzdr.de/record/2326 10.14278/rodare.2326 oai:rodare.hzdr.de:2326 url:https://www.hzdr.de/publications/Publ-37084 url:https://www.hzdr.de/publications/Publ-37083 doi:10.14278/rodare.2325 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Self-folding of two-dimensional thin templates into pyramidal micro-structures by a liquid drop - a numerical model info:eu-repo/semantics/other software

oai:rodare.hzdr.de:2803 2024-07-01T12:31:35Z software user-rodare user-fwd user-energy

Lecrivain, Gregory Lecrivain, Gregory 2024-04-14 Source files and selected raw data related to the manuscript "Self-folding of two-dimensional thin templates into pyramidal micro-structures by a liquid drop - a numerical model" by Gregory Lecrivain, Helmholtz-Zentrum Dresden-Rossendorf, Germany, 2024. 1) folder "manuscript", This folder contains all text documents related to manuscript. Text and final figures are found in the directory. 2) folder "scripts" This folder contains python and bash scripts used to post process the raw data and prepare the figures.You will need to install some python3 libraries. Use the following command pip install pyquaternion matplotlib scipy intersect 3) folder "figures" This folder contain information on how to run the simulations related to the figure. More information in README file in each figure/figureX subfloder with X the figure number in the manuscript. 4) folder "src" This folder contains the all c++ files related to the source code. 4.1) Prior to compiling, you should have gcc(7.3.0), openmpi(2.1.2), make(4.3), cmake(3.20.2), python(3.8.0), blas(3.8.0), lapack(3.8.0), boost(1.78.0), and git(2.30.1) available on your machine. The version number in the parenthesis corresponds to the one I used on the local HPC available at my institution. In my case, I type "module load gcc/7.3.0 openmpi/2.1.2 make/4.3 cmake/3.20.2 python/3.8.0 blas/3.8.0 lapack/3.8.0 boost/1.78.0 git/2.30.1". 4.2) To compile the libraries, open a terminal, cd to the src directory and type "make libs". All outputs will placed in the folder $HOME/local. The libraries' tarballs needed to compile the code are placed in the Libs directory. 4.3) I have manually installed paraview 5.9.1 in $HOME/Paraview/ParaView-5.9.1-MPI-Linux-Python3.8-64bit/. pvpython is used to export txt data (hinge, drop and three-phase contact line) to vtk format. 4.4) Open your ~/.bashrc file and add the following lines. export IGL_NUM_THREADS=1 export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/local/libconfig-1.7.3/lib export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/local/gmp-6.2.1/lib export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/local/mpfr-4.1.0/lib export PATH=$PATH:$HOME/Documents/microorigami/src #(or whereever, your chosen parent directory is) export PATH=$PATH:$HOME/Documents/microorigami/scripts #(or whereever, your chosen parent directory is) export PATH=$PATH:$HOME/Documents/microorigami/paraview/bin #(or whatever path you used) 4.5) open a new terminal, cd to the src directory and type "make check_library_path". The terminal should return "library path to libconfig is correct" "library path to gmp is correct" "library path to mpfr is correct" If that is the case, i.e. the paths are correctly set. To compile, type "make main post". Alternatively, one can speed up the installation by typing "make -j 4 main post", where 4 is the number of cpus I use. 4.6) Help is available in each header file (.h) in the form of doxygen comments. Type "make doxy". The folder html will appear under src. 4.7) Type "make clean" to clean the src folder 5) folders "caX_sideY_ecZ.zip" The zip files contains, where where X = 70 is the contact angle, Y = 5 the number of side panels and Z = 0.8, 1.6 and 2.4 the elasto-capillary number, are selected raw data related to Figure 10. All other raw data can be reproduced by following the commands in the README text file located in each figX folder, with X=1,2,...,13. After extraction, three folders will be created, namely wd/ca70/side5/ec0.8, wd/ca70/side5/ec1.6 and wd/ca70/side5/ec2.4, where wd is your working directory. To convert the data into human-readable format (txt, vtk, stl,...) type "source Utils.sh; ExportScript --verbose --submit" in the working directory wd on the hpc. The bash function ExportScript is located in "scripts/Utils.sh". https://rodare.hzdr.de/record/2803 10.14278/rodare.2803 oai:rodare.hzdr.de:2803 eng url:https://www.hzdr.de/publications/Publ-37084 url:https://www.hzdr.de/publications/Publ-37083 doi:10.14278/rodare.2325 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Micro-origami simulation drop encapsulation self-folding fluid-structure interaction Self-folding of two-dimensional thin templates into pyramidal micro-structures by a liquid drop - a numerical model info:eu-repo/semantics/other software

oai:rodare.hzdr.de:784 2024-08-14T10:40:48Z openaire_data user-fwd user-rodare user-topflow

Döß, Alexander Schubert, Markus Wiedemann, Philipp Schleicher, Eckhard Hampel, Uwe 2021-01-29 This data set contains gas phase fraction data (void files, v.) obtained from wire-mesh sensor recordings up and downstream of horizontal pipe bends. The test sections and experimental setups are explained in the correpsonding journal paper. The post processing was done with the Wire-mesh Sensor Framework GUI (Version 1.3.0). The archive is organzed as follows: (1) Each .zip file contains the void files for one distinct location (INL, OUT or REF) for the respective test sections (S - straight pipe, B - Horizontal 90° Bend, Upr_SB - Upright S-bend, Hor_SB - Horizontal S-bend) and pipe diameter (DN50 and DN200). (2) The 'overview.csv' (separator = semicolon, decimal operator: = comma) links the files in this data set to the corresponding flow rates, FFPI degrees of membership and RGB color values as they are presented in the journal paper. The column 'File Prefix' contains the explicit file indicator for the .v-files, the column 'Direcotry' contains the location of in this data set. (3) The MatLab script 'openvoid.m' exemplarily shows how to read in the data contained in the .v file. https://rodare.hzdr.de/record/784 10.14278/rodare.784 oai:rodare.hzdr.de:784 url:https://rodare.hzdr.de/record/786 url:https://www.hzdr.de/publications/Publ-32210 url:https://www.hzdr.de/publications/Publ-32471 doi:10.14278/rodare.783 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Flow morphologies Horizontal Two-phase flow Wire-mesh sensor TERESA Dataset for: Flow morphologies in straight and bent horizontal pipes info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:762 2024-08-14T10:41:25Z openaire_data user-fwd user-rodare user-topflow

Timaeus, Robert Hampel, Uwe Schubert, Markus 2021-01-28 This publication provides the data of a study executed with an inclined rotating fixed-bed reactor. Here, the hydrogenation of alpha-methylstyrene was investigated via experiments and simulations. In particular gas-limited reaction conditions were analyzed to reveal the potential of the reactor for process intensification. The space-time yield of the reactor was taken as performance measure and compared to a conventional trickle-bed reactor. The simulations were executed with a hybrid model, consisting of an Eulerian-Eulerian model and a heterogeneous continuum model. The data is provided in an excel file. Firstly, the "Read me" sheet should be consulted. https://rodare.hzdr.de/record/762 10.14278/rodare.762 oai:rodare.hzdr.de:762 eng url:https://www.hzdr.de/publications/Publ-32176 doi:10.14278/rodare.761 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess inclined rotating fixed-bed reactor multiphase phase flow CFD process intensification Assessment of inclined rotating fixed-bed reactors - Data of experiments and simulations info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1473 2023-10-26T08:28:44Z openaire_data user-energy user-fwd user-hzdr user-rodare

Heßenkemper, Hendrik Starke, Sebastian Atassi, Yazan Ziegenhein, Thomas Lucas, Dirk 2022-03-07 This dataset contains the annotated training images and synthetic test images for the publication "Bubble identification from images with machine learning methods". https://rodare.hzdr.de/record/1473 10.14278/rodare.1473 oai:rodare.hzdr.de:1473 eng url:https://www.hzdr.de/publications/Publ-34351 url:https://www.hzdr.de/publications/Publ-34350 doi:10.14278/rodare.1472 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Dataset for Bubble identification from images with machine learning methods info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1487 2023-10-26T08:28:44Z openaire_data user-energy user-fwd user-hzdr user-rodare

Heßenkemper, Hendrik Starke, Sebastian Atassi, Yazan Ziegenhein, Thomas Lucas, Dirk 2022-03-22 This dataset contains the annotated training images and synthetic test images for the publication "Bubble identification from images with machine learning methods". https://rodare.hzdr.de/record/1487 10.14278/rodare.1487 oai:rodare.hzdr.de:1487 eng doi:10.1016/j.ijmultiphaseflow.2022.104169 url:https://www.hzdr.de/publications/Publ-34351 url:https://www.hzdr.de/publications/Publ-34350 doi:10.14278/rodare.1472 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Dataset for Bubble identification from images with machine learning methods info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:4561 2026-03-26T07:34:01Z openaire_data user-fwd user-rodare

Huang, Guangyuan Tan, Shiyong Hessenkemper, Hendrik Lucas, Dirk Eckert, Kerstin Ni, Rui Bourgoin, Mickael Bragg, Andrew Ma, Tian 2026-03-15 This data publication contains the data to reproduce the figures for the paper "Super-ballistic pair dispersion in bubble-induced turbulence: Contrast between tracers and bubbles". https://rodare.hzdr.de/record/4561 10.14278/rodare.4561 oai:rodare.hzdr.de:4561 url:https://www.hzdr.de/publications/Publ-43133 doi:10.14278/rodare.4560 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Super-ballistic pair dispersion in bubble-induced turbulence: Contrast between tracers and bubbles info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:136 2024-08-14T11:28:45Z openaire_data user-fwd user-rodare user-topflow

Neumann-Kipping, Martin Hampel, Uwe Bieberle, André Beyer, Matthias Sprewitz, Uwe Neumann-Kipping, Martin Hampel, Uwe 2019-06-26 For the investigation of bubbly two-phase flow, which should serve as a future benchmark experiment for CFD code validation, an experimental study has been conducted at the Transient Two-Phase Flow (TOPFLOW) facility at Helmholtz-Zentrum Dresden – Rossendorf (HZDR) using ultrafast electron beam X-ray tomography (UFXRAY). In this study, flow constrictions were installed into a pipe to create a generic three-dimensional flow field as an advanced test case for CFD codes. UFXRAY provide valueable data of the gas phase dynamics with high temporal and spatial resolution. The provided data set contains tomography raw-data for the experimental series L30 that uses a semi-circular flow constriction with a blockage ratio of 0.5. For visualization, the data might be opend with Fiji. Therefore choose Import->Raw... In the following window specify "Image type" as 16-bit Unsigned, "Width" as 288 pixels and "Height" as 500 pixels for 2x1000Hz measurement or 200 pixels for 2x2500Hz measurement. Make sure that "Little-endian byte order" is checked. A data set contains image frames of both scanning planes in alternating order. Therefore, if only a single scanning plane is required, the offset and gap parameters need to be set to 288000 bytes for 2x1000Hz measurement or 115200 bytes for 2x2500Hz measurement. This work is funded by the German Federal Ministry for Economic Affairs and Energy (BMWi) with the grant number 1501481 on the basis of a decision by the German Bundestag. https://rodare.hzdr.de/record/136 10.14278/rodare.136 oai:rodare.hzdr.de:136 eng doi:10.14278/rodare.137 doi:10.14278/rodare.195 doi:10.14278/rodare.124 doi:10.14278/rodare.139 doi:10.14278/rodare.197 doi:10.14278/rodare.122 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess ultrafast X-ray computed tomography bubbly two-phase flow three-dimensional flow field two-phase pipe flow Ultrafast X-ray tomography raw-data of bubbly two-phase pipe flow around a semi-circular constriction info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:925 2024-08-14T10:39:14Z openaire_data user-fwd user-rodare user-topflow

Kipping, Ragna Hampel, Uwe 2021-04-13 This data set contains gas phase hydrodynamic data obtained from ultrafast X-ray tomography measurements in a bubble column. Global and local gas holdups, as well as bubble size distributions are given for I) non reactive conditions with nitrogen (gas) and sodium hydroxide solution (liquid) and II) reactive conditions with carbon dioxide (gas) and sodium hydroxide solution (liquid). Additionally the data set contains the corresponding consumption rates obtained from wire-mesh sensor measurements. Furhter details on the experiments are explained in the corresponding journal paper. Financial support from the German Research Council (Deutsche Forschungsgemeinschaft) within the Priority Research Program SPP-1740 "Reactive Bubbly Flows" under contract number HA 3088/8-2 is gratefully acknowledged. https://rodare.hzdr.de/record/925 10.14278/rodare.925 oai:rodare.hzdr.de:925 eng doi:10.1016/j.cherd.2021.04.020 url:https://www.hzdr.de/publications/Publ-32533 url:https://www.hzdr.de/publications/Publ-32261 doi:10.14278/rodare.924 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess bubble columns wire-mesh sensor UFXCT Dataset for: Chemical absorption measurements in a lab scale bubble column info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3624 2025-07-16T06:56:57Z openaire_data user-fwd user-rodare user-hzdr

Skrypnik, Artem Lappan, Tobias Knüpfer, Leon Ziauddin, Muhammad Arnal Tribaldos, Icíar Shevchenko, Natalia Heitkam, Sascha 2025-03-07 The hydrodynamic theory of pneumatic foam analytically predicts the advective transport of liquid by foam rising continuously in a vertical column or pipe, relying on cross-sectional averaging of the foam velocity and liquid fraction. This experimental study accumulates a database for assessing the pneumatic foam theory in a vertically aligned diverging nozzle, i.e. at increasing cross-sectional area in nominal flow direction. The velocity distribution of the flowing foam and its liquid fraction distribution were measured by means of X-ray, optical and electrical techniques in three different nozzles distinguished by their half angle θ = 5°, 10°, 20°. The experimental setup and the measurements are described in detail in Skrypnik et al. (https://www.hzdr.de/publications/Publ-41024). X-ray radiography (XR) has measured the distribution of the liquid fraction (εXR) inside the nozzle as a two-dimensional projection, i.e. integrated in the X-ray beam direction. X-ray particle tracking (XPTV) has measured the local velocity uT inside the nozzle, along the motion path of each tracer particle described by the radial (r) and vertical position (z) in consecutive frames. The velocity uT was normalised by the superficial gas velocity jg(z) = Qg / (π * R(z)2), with Qg denoting the gas flow rate of compressed air applied for foam generation, and R(z) denoting the radius of the cross-sectional area depending on the vertical position z. To compare different nozzles, the vertical position z was normalised by the total length L = 25 mm / tan(θ) of the nozzle depending on its half angle θ = 5°, 10°, 20°. Optical PIV adapted to foam (FoamPIV) has measured the time-averaged velocity uW through the transparent wall of the nozzle, i.e. at the nozzle radius r = R(z) depending on the vertical position z. As described above, the velocity uW was normalised by the superficial gas velocity jg(z), and the vertical position z was normalised by the total length L of the nozzle. Electrode pairs (EP) have measured the cross-sectional average values of the liquid fraction (εEP) upstream and downstream the nozzle, simultaneously to the X-ray radiographic measurement of the liquid fraction distribution (εXR) inside the nozzle. The experimental data in this repository is structured into different folders and files as follows. FoamNozzle_Overview.CSV gives an overview of all measurements runs, nozzles, and techniques. Level 1 are folders classified by the measurement technique: 01_XR: X-ray radiography, 02_XPTV: X-ray particles tracking velocimetry, 03_FoamPIV: Optical PIV adapted to foam, 04_EP: Electrode pairs. Level 2 are folders classified by the different nozzles, distinguished by the nozzle half angle θ = 5°, 10°, 20°, and divided into bottom and top part in the case of θ = 5°, 10°. Level 3 are TIF and CSV files of measurement results. 01_XR: Each TIF image shows the time-averaged distribution of the liquid fraction inside the nozzle; the liquid fraction (0 < εXR < 1) is indicated by the value of each pixel. 02_XPTV: Each CSV file consists of three columns, namely the radial position (r, in mm), the normalised vertical position (z / L), and the normalised velocity (uT / jg(z)). 03_FoamPIV: Each CSV file consists of two columns, namely the normalised vertical position (z / L), and the normalised velocity (uW / jg(z)). 04_EP: Each CSV file consists of three columns, namely the cross-sectional average of the liquid fraction (0 < εEP < 1) downstream as well as upstream the nozzle, and the time (in s). The authors gratefully acknowledge the financial support provided by the German Research Foundation (DFG, under grant number HE 7529/3-1, project numbers 431077191 and 551239760), by the German Federal Ministry of Education and Research (BMBF, under grant number 03HY123E), and by the Summer Student Program at the Helmholtz-Zentrum Dresden-Rossendorf. https://rodare.hzdr.de/record/3624 10.14278/rodare.3624 oai:rodare.hzdr.de:3624 eng url:https://www.hzdr.de/publications/Publ-41083 url:https://www.hzdr.de/publications/Publ-41024 doi:10.14278/rodare.3623 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Drainage Liquid fraction Particle tracking velocimetry Particle image velocimetry Pneumatic foam theory X-ray radiography Data publication: Measurement of liquid foam flow through a diverging nozzle info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:2989 2026-02-27T10:10:01Z openaire_data user-fwd user-hzdr user-rodare user-rofex

Papapetrou, Theodoros Nestor Bieberle, Martina Barthel, Frank Hampel, Uwe Lecrivain, Gregory 2024-06-03 Original video camera data, and time-averaged, beam-hardening-corrected, drift-corrected dynamic and static UFXCT image data used in the associated publication; code used for the final processing; and the final processed data. More details are found in the publication and in the info in the respective folders. https://rodare.hzdr.de/record/2989 10.14278/rodare.2989 oai:rodare.hzdr.de:2989 eng url:https://www.hzdr.de/publications/Publ-36765 url:https://www.hzdr.de/publications/Publ-39067 url:https://www.hzdr.de/publications/Publ-36766 doi:10.14278/rodare.2241 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/rofex info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode granular mixing rotating drum ultrafast X-ray computed tomography image processing Data and code: Investigating binary granular mixing in a rotating drum using ultrafast X-ray computed tomography info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:138 2024-08-14T11:26:45Z openaire_data user-hzdr user-fwd user-rodare user-topflow

Neumann-Kipping, Martin Hampel, Uwe Bieberle, André Neumann-Kipping, Martin Hampel, Uwe 2019-08-01 For the investigation of bubbly two-phase flow, which should serve as a future benchmark experiment for CFD code validation, an experimental study has been conducted at the Transient Two-Phase Flow (TOPFLOW) facility at Helmholtz-Zentrum Dresden – Rossendorf (HZDR) using ultrafast electron beam X-ray tomography (UFXRAY). In this study, flow constrictions were installed into a DN50 pipe to create a generic three-dimensional flow field as an advanced test case for CFD codes. UFXRAY CT scans were performed in dual-imaging mode and 9 imaging planes for 15 s with a temporal resolution of 1.0 kHz and 2.5 kHz to provide valuable data of the gas phase dynamics. The provided data set contains tomographic image data for the experimental series L30 that uses a semi-circular flow constriction with a blockage ratio of 0.5. Here, all image stacks for a given operating point are stored in a single HDF5 file with a spatial resolution of 0.5 mm/pixel (Images are stacked as time series). Further attributes (e.g. reconstruction parameters) are available for each image stack and are accessible e.g. using Matlab or Octave. The relative distance of the each respective scanning position is defined in an additional info.txt. This work is funded by the German Federal Ministry for Economic Affairs and Energy (BMWi) with the grant number 1501481 on the basis of a decision by the German Bundestag. https://rodare.hzdr.de/record/138 10.14278/rodare.138 oai:rodare.hzdr.de:138 eng doi:10.14278/rodare.122 doi:10.14278/rodare.195 doi:10.14278/rodare.124 doi:10.14278/rodare.139 doi:10.14278/rodare.197 url:https://www.hzdr.de/publications/Publ-29885 doi:10.14278/rodare.137 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess ultrafast X-ray computed tomography bubbly two-phase flow three-dimensional flow field two-phase pipe flow tomographic image data Ultrafast X-ray tomography image data of bubbly two-phase pipe flow around a semi-circular constriction info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:2811 2025-02-19T08:19:34Z software user-energy user-fwd user-rodare

Hessenkemper, Hendrik Wang, Lantian Lucas, Dirk Shiyong, Tan Rui, Ni Ma, Tian 2024-04-17 Software for 3D tracking of deformable bubbles in swarms https://rodare.hzdr.de/record/2811 10.14278/rodare.2811 oai:rodare.hzdr.de:2811 url:https://www.hzdr.de/publications/Publ-38982 url:https://www.hzdr.de/publications/Publ-38980 doi:10.14278/rodare.2810 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode 3D Lagrangian bubble tracking Bubble swarms Deformable bubbles Deep learning Software publication: 3D detection and tracking of deformable bubbles in swarms with the aid of deep learning models info:eu-repo/semantics/other software

oai:rodare.hzdr.de:236 2020-10-30T13:57:32Z openaire_data user-fwd user-rodare

Unger, Sebastian Krepper, Eckhard Beyer, Matthias Hampel, Uwe 2020-01-24 This is the data set for the corresponding journal publication " Numerical optimization of a finned tube bundle heat exchanger arrangement for passive spent fuel pool cooling to ambient air". https://rodare.hzdr.de/record/236 10.14278/rodare.236 oai:rodare.hzdr.de:236 url:https://www.hzdr.de/publications/Publ-30638 url:https://www.hzdr.de/publications/Publ-29116 doi:10.14278/rodare.235 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Numerical optimization of a finned tube bundle heat exchanger arrangement for passive spent fuel pool cooling to ambient air info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:287 2023-01-23T10:00:26Z software user-rodare user-energy user-fwd user-hzdr

Meller, Richard Schlegel, Fabian Lucas, Dirk 2020-04-06 A solver for multiphase flows based on the incompressible Eulerian multi-field two-fluid model for the OpenFOAM release of The OpenFOAM Foundation for numerical simulations of multiphase flows with morphology changes and resolved interfaces. Features: morphology adaptive modeling framework for modelling of dispersed and resolved interfaces based on Eulerian multi-field two-fluid model compact interpolation method according to Cubero et al. (Comput Chem Eng, 2014, Vol. 62, 96-107), including virtual mass numerical drag according to Strubelj and Tiselj (Int J Numer Methods Eng, 2011, Vol. 85, 575-590) to describe resolved interfaces in a volume-of-fluid like manner strong phase coupling resolved by partial elimination algorithm selected test cases: a two-dimensional gas bubble, rising in a liquid, which is laden with micro gas bubbles, and a two-dimensional stagnant stratification of water and oil, sharing a large-scale interface This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)". https://rodare.hzdr.de/record/287 10.14278/rodare.287 oai:rodare.hzdr.de:287 eng url:https://www.hzdr.de/publications/Publ-30885 doi:10.14278/rodare.286 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 OpenFOAM, C++, CFD, Finite volume method, Multiphase flow, Multi-field two-fluid model, Eulerian-Eulerian model, Momentum interpolation, Partial elimination algorithm Numerical framework for a morphology adaptive multi-field two-fluid model in OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:739 2021-11-12T13:10:50Z software user-fwd user-rodare

Lecrivain, Gregory 2021-01-12 This archive contains the raw data and the original code described in the manuscript "Dynamics of mono- and poly-disperse two-dimensional foams flowing in an obstructed channel", submitted in 2020 to Journal of Fluid Mechanics by Thales Carl Lavoratti, Sascha Heitkam, Uwe Hampel, and Gregory Lecrivain. The archive contains the following data: - C++ code used to simulate the foam dynamics and create the raw data (petsc.tar.gz) - selected raw data in petsc format. The mono-disperse scenarios V125.tar.gz, V200.tar.gz, V250.tar.gz, V350.tar.gz correspond to the gas fractions \varepsilon = 0.44, 0.68, 0.83, and 0.99, respectively. The poly-disperse scenarios V125r.tar.gz, V200r.tar.gz, V250r.tar.gz, V350r.tar.gz correspond to the gas fractions 0.44, 0.69, 0.84, and 0.99, respectively - bash and python scripts used to create bubble contours from the petsc raw data (scripts.tar.gz) - extracted bubble contours (contours.tar.gz) - python codes used to make figures and animations (figures.tar.gz) - Mathematica notebook testing the wall potential f(\phi_w) = 0 (potential.nb) - manuscript data (manuscript.tar.gz) For further questions, feel free to contact me (g.lecrivain@hzdr.de). https://rodare.hzdr.de/record/739 10.14278/rodare.739 oai:rodare.hzdr.de:739 eng url:https://www.hzdr.de/publications/Publ-32542 url:https://www.hzdr.de/publications/Publ-31374 doi:10.14278/rodare.738 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Flowing foam Phase-field simulation Obstructed channel Data/Software for: Dynamics of mono- and poly-disperse two-dimensional foams flowing in an obstructed channel info:eu-repo/semantics/other software

oai:rodare.hzdr.de:776 2025-08-06T14:39:17Z openaire_data user-fwd user-rodare user-topflow

Schleicher, Eckhard Schubert, Markus Hampel, Uwe Vishwakarma, Vineet 2021-01-28 The hydrodynamic data of a single-pass cross-flow sieve tray equipped in an air/water column mockup (0.8 m dia.) are provided here. The uploaded data were obtained after processing the two-phase dispersion data acquired by a novel multi-probe flow profiler. Effective froth height distribution, 3D liquid holdup distribution, and tracer-based data (i.e., appearance time distribution (ATD) parameters and liquid velocity map) are provided for the studied loadings. https://rodare.hzdr.de/record/776 10.14278/rodare.776 oai:rodare.hzdr.de:776 eng url:https://www.hzdr.de/publications/Publ-32198 url:https://www.hzdr.de/publications/Publ-32284 doi:10.14278/rodare.775 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess column tray two-phase cross-flow hydrodynamics effective froth height 3D liquid holdup tracer-based data Hydrodynamic data of an operational single-pass cross-flow sieve tray info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1480 2025-12-19T07:35:41Z software user-openfoam user-fwd user-hzdr user-energy user-rodare

Couteau, Arthur Colombo, Marco Kriebitzsch, Sebastian Parekh, Jigar Schlegel, Fabian Bilde, Kasper Gram Draw, Mazen Evdokimov, Ilya Hänsch, Susann Khan, Harris Krull, Benjamin Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gašper Tekavčič, Matej 2022-03-14 The HZDR multiphase addon contains additional code for the open-source CFD software OpenFOAM, released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method). Within the OpenFOAM library the multiphaseEulerFoam framework is used for this type of simulation. The addon contains a modified solver named HZDRmultiphaseEulerFoam with the full support of the HZDR baseline model set for polydisperse bubbly flows. In addition a solver dedicated to a hybrid modelling approach (dispersed and resolved interfaces, Meller, Schlegel and Lucas, 2021) named cipsaMultiphaseEulerFoam is provided with the addon. This solver has an interface to the multiphaseEulerFoam framework and utilizes all available interfacial models of it. General enhancements modified turbulent wall functions of Menter according to Rzehak and Kriebitzsch (2015) dynamic time step adjustment via PID controller HZDRmultiphaseEulerFoam bubble induced turbulence model of Ma et al. (2017) drag model of Ishii and Zuber (1979) without correction for swarm and/or viscous effects wall lubrication model of Hosokawa et al. (2002) additional breakup and coalescence models for class method according to Kusters (1991) and Adachi et al. (1994) degassing boundary condition (fvModel) lift force correlation of Hessenkemper et al. (2021) lift force correlation of Saffman (1965) as extended by Mei (1992). aspect ratio correlation of Ziegenhein and Lucas (2017) real pressure treatment via explicit turbulent normal stress according to Rzehak et al. (2021) GPU-based accelerated computation of coalescence and breakup frequencies for the models of Lehr et al. (2002) (Petelin et al., 2021) configuration files and tutorials for easy setup of baseline cases according to Hänsch et al. (2021) cipsaMultiphaseEulerFoam morphology adaptive modelling framework for predicting dispersed and resolved interfaces based on Eulerian multi-field two-fluid model compact momentum interpolation method according to Cubero et al. (2014), including virtual mass numerical drag according to Strubelj and Tiselj (2011) to describe resolved interfaces in a volume-of-fluid like manner n-phase partial elimination algorithm for momentum equations to resolve strong phase coupling (Meller, Schlegel and Lucas, 2021) free surface turbulence damping (Frederix et al., 2018) for k-ω SST - symmetric and asymmetric - according to Tekavčič et al. (2021) sub-grid scale modelling framework (Meller, Schlegel and Klein, 2021) additional LES models for the unclosed convective sub-grid scale term closure models for sub-grid surface tension term configuration files and tutorials for easy setup of hybrid cases This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)" https://rodare.hzdr.de/record/1480 10.14278/rodare.1480 oai:rodare.hzdr.de:1480 eng url:https://www.hzdr.de/publications/Publ-32194 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32161 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM CFD Finite volume method Baseline model Multi-field two-fluid model Eulerian-Eulerian model Momentum interpolation Partial elimination algorithm Free Surface HZDR Multiphase Addon for OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:2185 2025-12-19T07:35:42Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Colombo, Marco Haßlberger, Josef Kriebitzsch, Sebastian Kumaresh, Pramodh Parekh, Jigar Zhang, Tingting Wang, Lisong Schlegel, Fabian Bilde, Kasper Gram Draw, Mazen Evdokimov, Ilya Hänsch, Susann Kamble, Vikrant Vinayak Khan, Harris Krull, Benjamin Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gasper Kota, Sesi Preetam Tekavcic, Matej 2023-03-21 The HZDR Multiphase Addon is a software publication released by Helmholtz-Zentrum Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, Interoperability, and Reuseability). It contains experimental research work for the open-source CFD software OpenFOAM, released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method).Highlights of the provided addon are:HZDR Baseline Model: addonMultiphaseEulerFoam solver with full support of the HZDR baseline model set for polydisperse bubbly flows, including configuration files and tutorials for simplified setup of Baseline cases (Hänsch et al., 2021).Population Balance Modelling: A GPU-accelerated population balance method according to Petelin et al. (2021).Morphology-adaptive Multifield Two-fluid Model (MultiMorph): cipsaMultiphaseEulerFoam solver featuring a morphology-adaptive modelling approach (dispersed and resolved interfaces, Meller et al., 2021) with an interface to the multiphaseEulerFoam framework to utilise all available interfacial models, and configuration files and tutorials for easy setup of cases with the MultiMorph Model.more ... This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)". https://rodare.hzdr.de/record/2185 10.14278/rodare.2185 oai:rodare.hzdr.de:2185 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 url:https://www.hzdr.de/publications/Publ-29886 url:https://www.hzdr.de/publications/Publ-32194 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-35412 url:https://www.hzdr.de/publications/Publ-36249 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Finite volume method Baseline model Multi-field two-fluid model Euler-Euler method Momentum interpolation Partial elimination algorithm Free Surface Flows C++ C CUDA Shell Python Gnuplot HZDR Multiphase Addon for OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:2321 2025-12-19T07:35:42Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Colombo, Marco Haßlberger, Josef Kriebitzsch, Sebastian Kumaresh, Pramodh Parekh, Jigar Zhang, Tingting Wang, Chih-Ta Wang, Lisong Schlegel, Fabian Bilde, Kasper Gram Draw, Mazen Evdokimov, Ilya Hänsch, Susann Kamble, Vikrant Vinayak Khan, Haris Krull, Benjamin Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gasper Kota, Sesi Preetam Tekavcic, Matej 2023-06-06 The Multiphase Code Repository by HZDR for OpenFOAM Foundation Software is a software publication released by Helmholtz-Zentrum Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, Interoperability, and Reuseability). It contains experimental research work for the open-source software released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method). Acknowledgement: OpenFOAM(R) is a registered trade mark of OpenCFD Limited, producer and distributor of the OpenFOAM(R) software via www.openfoam.com. The Multiphase Code Repository by HZDR for OpenFOAM Foundation Software is not compatible with the software released by OpenCFD Limited, but is based on the software released by the OpenFOAM Foundation via www.openfoam.org Highlights of the Multiphase Code Repository by HZDR HZDR Baseline Model: addonMultiphaseEuler solver with full support of the HZDR baseline model set for polydisperse bubbly flows, including configuration files and tutorials for simplified setup of Baseline cases (Hänsch et al., 2021). Population Balance Modelling: A GPU-accelerated population balance method according to Petelin et al. (2021). Morphology-adaptive Multifield Two-fluid Model (MultiMorph): cipsaMultiphaseEuler solver featuring a morphology-adaptive modelling approach (dispersed and resolved interfaces, Meller et al., 2021) with an interface to the multiphaseEuler framework to utilise all available interfacial models, and configuration files and tutorials for easy setup of cases with the MultiMorph Model. more ... This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)". https://rodare.hzdr.de/record/2321 10.14278/rodare.2321 oai:rodare.hzdr.de:2321 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 doi:10.14278/rodare.198 url:https://www.hzdr.de/publications/Publ-29886 url:https://www.hzdr.de/publications/Publ-32194 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-35412 url:https://www.hzdr.de/publications/Publ-36249 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Finite volume method Baseline model Multi-field two-fluid model Euler-Euler method Momentum interpolation Partial elimination algorithm Free Surface Flows C++ C CUDA Shell Python Gnuplot Multiphase Code Repository by HZDR for OpenFOAM Foundation Software info:eu-repo/semantics/other software

oai:rodare.hzdr.de:4050 2025-12-19T07:35:42Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Colombo, Marco Couteau, Arthur Haßlberger, Josef Kriebitzsch, Sebastian Parekh, Jigar Kumaresh, Pramodh Wang, Chih-Ta Wang, Lisong Zhang, Tingting Pilaka, Satya Sai Phani Santosh Schlegel, Fabian Bilde, Kasper Gram Draw, Mazen Evdokimov, Ilya Hänsch, Susann Kamble, Vikrant Vinayak Khan, Haris Kota, Sesi Preetam Krull, Benjamin Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gasper Riviera, Elena Tekavcic, Matej Varallo, Nicolo 2025-10-21 The Multiphase Code Repository by HZDR for OpenFOAM Foundation Software is a software publication released by Helmholtz-Zentrum Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, Interoperability, and Reuseability). It contains experimental research work for the open-source software released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method).Acknowledgement: OpenFOAM(R) is a registered trade mark of OpenCFD Limited, producer and distributor of the OpenFOAM(R) software via www.openfoam.com. The Multiphase Code Repository by HZDR for OpenFOAM Foundation Software is not compatible with the software released by OpenCFD Limited, but is based on the software released by the OpenFOAM Foundation via www.openfoam.orgHighlights of the Multiphase Code Repository by HZDRHZDR Baseline Model: addonMultiphaseEuler solver with full support of the HZDR baseline model set for polydisperse bubbly flows, including configuration files and tutorials for simplified setup of Baseline cases (Hänsch et al., 2021).Morphology-adaptive Multifield Two-fluid Model (MultiMorph): cipsaMultiphaseEuler solver featuring a morphology-adaptive modelling approach (dispersed and resolved interfaces, Meller et al., 2021) with an interface to the multiphaseEuler framework to utilise all available interfacial models, and configuration files and tutorials for easy setup of cases with the MultiMorph Model.more ... https://rodare.hzdr.de/record/4050 10.14278/rodare.4050 oai:rodare.hzdr.de:4050 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 doi:10.14278/rodare.198 url:https://www.hzdr.de/publications/Publ-29886 url:https://www.hzdr.de/publications/Publ-32194 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-35412 url:https://www.hzdr.de/publications/Publ-36249 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Finite volume method Baseline model Multi-field two-fluid model Euler-Euler method Momentum interpolation Partial elimination algorithm Free Surface Flows C++ C CUDA Shell Python Gnuplot Multiphase Code Repository by HZDR for OpenFOAM Foundation Software info:eu-repo/semantics/other software

oai:rodare.hzdr.de:4195 2025-12-19T07:35:43Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Colombo, Marco Couteau, Arthur Haßlberger, Josef Kriebitzsch, Sebastian Parekh, Jigar Kumaresh, Pramodh Wang, Chih-Ta Wang, Lisong Zhang, Tingting Pilaka, Satya Sai Phani Santosh Schlegel, Fabian Bilde, Kasper Gram Draw, Mazen Evdokimov, Ilya Hänsch, Susann Kamble, Vikrant Vinayak Khan, Haris Kota, Sesi Preetam Krull, Benjamin Lehnigk, Ronald Li, Jiadong Lyu, Hongmei Meller, Richard Petelin, Gasper Riviera, Elena Tekavcic, Matej Varallo, Nicolo 2025-12-16 The Multiphase Code Repository by HZDR for OpenFOAM Foundation Software is a software publication released by Helmholtz-Zentrum Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, Interoperability, and Reuseability). It contains experimental research work for the open-source software released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method).Acknowledgement: OpenFOAM(R) is a registered trade mark of OpenCFD Limited, producer and distributor of the OpenFOAM(R) software via www.openfoam.com. The Multiphase Code Repository by HZDR for OpenFOAM Foundation Software is not compatible with the software released by OpenCFD Limited, but is based on the software released by the OpenFOAM Foundation via www.openfoam.orgHighlights of the Multiphase Code Repository by HZDRHZDR Baseline Model: addonMultiphaseEuler solver with full support of the HZDR baseline model set for polydisperse bubbly flows, including configuration files and tutorials for simplified setup of Baseline cases (Hänsch et al., 2021).Morphology-adaptive Multifield Two-fluid Model (MultiMorph): cipsaMultiphaseEuler solver featuring a morphology-adaptive modelling approach (dispersed and resolved interfaces, Meller et al., 2021) with an interface to the multiphaseEuler framework to utilise all available interfacial models, and configuration files and tutorials for easy setup of cases with the MultiMorph Model.more ... https://rodare.hzdr.de/record/4195 10.14278/rodare.4195 oai:rodare.hzdr.de:4195 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 doi:10.14278/rodare.198 url:https://www.hzdr.de/publications/Publ-29886 url:https://www.hzdr.de/publications/Publ-32194 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-35412 url:https://www.hzdr.de/publications/Publ-36249 doi:10.14278/rodare.767 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/GPL-3.0 Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Finite volume method Baseline model Multi-field two-fluid model Euler-Euler method Momentum interpolation Partial elimination algorithm Free Surface Flows C++ C CUDA Shell Python Gnuplot Multiphase Code Repository by HZDR for OpenFOAM Foundation Software info:eu-repo/semantics/other software

oai:rodare.hzdr.de:3222 2024-11-12T10:18:29Z openaire_data user-fwd user-hzdr user-rodare user-rofex user-topflow

Barthel, Frank Sohr, Johanna Sprewitz, Uwe Schubert, Markus Bieberle, André Sohr, Johanna Barthel, Frank Sprewitz, Uwe Schubert, Markus 2024-11-12 This repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-1000 (specific geometric surface area is 1000 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files. https://rodare.hzdr.de/record/3222 10.14278/rodare.3222 oai:rodare.hzdr.de:3222 eng url:https://www.hzdr.de/publications/Publ-39878 doi:10.14278/rodare.3221 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/rofex url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess sandwich packing two-phase flow ultrafast electron beam X-ray computed tomography CT image sequences of sandwich packings: B1-250 plus B1-1000 at constant liquid rate of 50 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:55 2024-08-14T11:29:51Z openaire_data user-fwd user-rodare user-topflow

Bieberle, André Haller, Peer Bieberle, André Engmann, Chris Hartig, Jens Haller, Peer 2018-09-18 For the investigation of compressive load moulded wood tube gamma-ray CT has been applied at a 3 m long wood tube at different cross-sectional sections. CT data is normalized to the density of tap water with app. 22 °C temperature. https://rodare.hzdr.de/record/55 10.14278/rodare.55 oai:rodare.hzdr.de:55 eng url:https://www.hzdr.de/publications/Publ-27941 doi:10.14278/rodare.54 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess moulded wood tube gamma-ray computed tomography Analysis of moulded wood tube structure using gamma-ray computed tomography info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1085 2021-09-07T11:27:39Z openaire_data user-fwd user-rodare

Unger, Sebastian 2021-08-02 These are the the processed data of the paper "Numerical dimensioning of a pre-cooler for sCO2 power cycles to utilize industrial waste heat". The data contain the heat transfer and fluid dynamic values of the simulation performed for the corresponding article. https://rodare.hzdr.de/record/1085 10.14278/rodare.1085 oai:rodare.hzdr.de:1085 url:https://www.hzdr.de/publications/Publ-32978 url:https://www.hzdr.de/publications/Publ-31595 doi:10.14278/rodare.1084 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Numerical dimensioning of a pre-cooler for sCO2 power cycles to utilize industrial waste heat info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:852 2021-03-12T07:20:44Z openaire_data user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Simulationsdaten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie Untersuchung des Einflusses verschieder USRBDX-Strukturen auf den Elektronenfluss. https://rodare.hzdr.de/record/852 10.14278/rodare.852 oai:rodare.hzdr.de:852 deu url:https://www.hzdr.de/publications/Publ-32400 url:https://www.hzdr.de/publications/Publ-32406 doi:10.14278/rodare.851 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess ROFEX FLUKA Electron beam Beam position Data for (4/15): Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3090 2024-09-04T08:27:20Z openaire_data user-fwd user-hzdr user-rodare user-topflow

Bieberle, André Schleicher, Eckhard Tschofen, Martin Loeschau, Martin Bieberle, André Schleicher, Eckhard 2024-08-15 In this study, we used gamma-ray computed tomography (GammaCT) as reference measurement system to evaluate a novel, non-destructive, smart gravel sensor that is based on the well-known wire-mesh sensor. Various sediment fillings with different infiltrating particle sizes are applied to the gravel sensor and the generated particle holdup is locally determined with both measurement systems simultaneously. Gefördert durch die DFG https://rodare.hzdr.de/record/3090 10.14278/rodare.3090 oai:rodare.hzdr.de:3090 eng url:https://www.hzdr.de/publications/Publ-39425 url:https://www.hzdr.de/publications/Publ-39541 doi:10.14278/rodare.3089 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Wire-mesh sensor Gravel sensor Gamma-ray computed tomography Evaluation data set for the GravelSensor info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:224 2024-08-14T10:45:15Z openaire_data user-fwd user-hzdr user-rodare user-topflow

Bieberle, Martina Neumann-Kipping, Martin Wolf, Jan Hampel, Uwe Bieberle, André Schäfer, Thomas 2020-01-07 This data repository contains reconstructed and quantitatively analyzed gas-liquid two-phase distributions obtained from a centrifugal pump mock-up whose geometry is related to a commercially available industrial centrifugal pump. As measurement system the ultrafast electron beam X-ray CT scanner (UFXCT) is applied with a frame rate of 2,500 Hz, single-plane mode and a total scanning interval of 5 seconds. The data repository contains: Reconstructed raw data sets (Algebraic Reconstruction Technique from the UFO framework) for different inlet gas fractions (eps0.0xx) at constant 1600 rpm and for both rotating and back-rotated impeller positions, respectively Extracted RPM per CT scan (frame) including its raw data Extracted angular positions of the impeller mock-up per frame Calculated quantitative gas fraction data sets (static impeller position) Time-averaged gas fraction distribution and its corresponding averaged variance Pump and impeller mask data Additional data obtained from the SPS server with a sampling frequency of 1 Hz Data is stored in HDF5 format. https://rodare.hzdr.de/record/224 10.14278/rodare.224 oai:rodare.hzdr.de:224 eng doi:10.14278/rodare.76 doi:10.1115/1.4045497 url:https://www.hzdr.de/publications/Publ-30374 doi:10.14278/rodare.223 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess centrifugal pump gas-liquid two-phase flow ultrafast electron beam X-ray computed tomography Gas-liquid two-phase flow in a centrifugal pump mock-up with swirling gas flow injection at 1600 rpm info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:222 2024-08-14T10:45:32Z openaire_data user-fwd user-hzdr user-rodare user-topflow

Bieberle, Martina Neumann-Kipping, Martin Wolf, Jan Hampel, Uwe Bieberle, André Schäfer, Thomas 2020-01-10 This data repository contains reconstructed and quantitatively analyzed gas-liquid two-phase distributions obtained from a centrifugal pump mock-up whose geometry is related to a commercially available industrial centrifugal pump. As measurement system the ultrafast electron beam X-ray CT scanner (UFXCT) is applied with a frame rate of 2,500 Hz, single-plane mode and a total scanning interval of 10 seconds. The data repository contains: Reconstructed raw data sets (Algebraic Reconstruction Technique from the UFO framework) for different inlet gas fractions (eps0.0xx) at constant 1480 rpm and for both rotating and back-rotated impeller positions, respectively Extracted RPM per CT scan (frame) including its raw data Extracted angular positions of the impeller mock-up per frame Calculated quantitative gas fraction data sets (static impeller position) Time-averaged gas fraction distribution and its corresponding averaged variance Pump and impeller mask data Additional data obtained from the SPS server with a sampling frequency of 1 Hz Data is stored in HDF5 format. https://rodare.hzdr.de/record/222 10.14278/rodare.222 oai:rodare.hzdr.de:222 eng doi:10.14278/rodare.76 doi:10.1115/1.4045497 url:https://www.hzdr.de/publications/Publ-30373 doi:10.14278/rodare.221 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess centrifugal pump gas-liquid two-phase flow ultrafast electron beam X-ray computed tomography Gas-liquid two-phase flow in a centrifugal pump mock-up with swirling gas flow injection at 1480 rpm info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1762 2024-08-14T10:29:30Z openaire_data user-fwd user-energy user-rodare user-topflow

Bieberle, André Schubert, Markus Zippe, Cornelius Bieberle, André Loll, Rouven Pyka, Tobias Schubert, Markus 2022-06-29 For liquid fraction investigations in a rotating printed zick-zack foam (small) packed bed (RPB) angular-resolved time-averaged gamma-ray computed tomography (GammaCT) is applied. Liquid is injected by a multi point injector. This repository contains: the raw data of the gamma-ray CT scanner, the extracted projection-averaged profile data matrix and the restructured angular-resolved time-averaged sinogram data. https://rodare.hzdr.de/record/1762 10.14278/rodare.1762 oai:rodare.hzdr.de:1762 eng url:https://www.hzdr.de/publications/Publ-34857 doi:10.14278/rodare.1761 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Rotating Packed Bed Rotating Packed Bed Computed Tomography RawData - Liquid fraction investigations in a RPB (small printed zick-zack foam 2, multi point) using GammaCT info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1752 2024-08-14T10:30:30Z openaire_data user-fwd user-energy user-rodare user-topflow

Bieberle, André Schubert, Markus Zippe, Cornelius Bieberle, André Loll, Rouven Pyka, Tobias Schubert, Markus 2022-06-29 For liquid fraction investigations in a rotating solid foam packed bed (RPB) angular-resolved time-averaged gamma-ray computed tomography (GammaCT) is applied. Liquid is injected by a single point injector. This repository contains the raw data of the gamma-ray CT scanner, the extracted projection-averaged profile data matrix and the restructured angular-resolved time-averaged sinogram data. https://rodare.hzdr.de/record/1752 10.14278/rodare.1752 oai:rodare.hzdr.de:1752 eng url:https://www.hzdr.de/publications/Publ-34854 doi:10.14278/rodare.1751 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Rotating Packed Bed Process Intensivation Computed Tomography RawData - Liquid fraction investigations in a RPB (solid foam, single point) using GammaCT info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:213 2024-08-14T10:46:36Z openaire_data user-fwd user-hzdr user-rodare user-topflow

Bieberle, Martina Neumann-Kipping, Martin Wolf, Jan Hampel, Uwe Bieberle, André Schäfer, Thomas 2020-01-10 This data repository contains reconstructed and quantitatively analyzed gas-liquid two-phase distributions obtained from a centrifugal pump mock-up whose geometry is related to a commercially available industrial centrifugal pump. As measurement system the ultrafast electron beam X-ray CT scanner (UFXCT) is applied with a frame rate of 2,500 Hz, single-plane mode and a total scanning interval of 5 seconds. The data repository contains: Reconstructed raw data sets (Algebraic Reconstruction Technique from the UFO framework) for different inlet gas fractions (eps0.0xx) at constant 1300 rpm and for both rotating and back-rotated impeller positions, respectively Extracted RPM per CT scan (frame) including its raw data Extracted angular positions of the impeller mock-up per frame Calculated quantitative gas fraction data sets (static impeller position) Time-averaged gas fraction distribution and its corresponding averaged variance Pump and impeller mask data Additional data obtained from the SPS server with a sampling frequency of 1 Hz Data is stored in HDF5 format. https://rodare.hzdr.de/record/213 10.14278/rodare.213 oai:rodare.hzdr.de:213 eng doi:10.14278/rodare.76 doi:10.1115/1.4045497 url:https://www.hzdr.de/publications/Publ-30369 doi:10.14278/rodare.212 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess centrifugal pump gas-liquid two-phase flow ultrafast electron beam X-ray computed tomography Gas-liquid two-phase flow in a centrifugal pump mock-up with disperse gas flow injection at 1300 rpm info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:856 2021-03-15T08:18:25Z openaire_data user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Simulationsdaten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie Untersuchung des Einflusses verschiedener USRBDX-Strukturen auf den Elektronenfluss. https://rodare.hzdr.de/record/856 10.14278/rodare.856 oai:rodare.hzdr.de:856 deu url:https://www.hzdr.de/publications/Publ-32400 url:https://www.hzdr.de/publications/Publ-32408 doi:10.14278/rodare.855 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess ROFEX FLUKA Electron beam Beam position Data (6/15) for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3214 2024-11-12T10:18:29Z openaire_data user-fwd user-hzdr user-rodare user-rofex user-topflow

Barthel, Frank Sohr, Johanna Sprewitz, Uwe Schubert, Markus Bieberle, André Sohr, Johanna Barthel, Frank Sprewitz, Uwe Schubert, Markus 2024-11-12 This repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-500 (specific geometric surface area is 500 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files. https://rodare.hzdr.de/record/3214 10.14278/rodare.3214 oai:rodare.hzdr.de:3214 eng url:https://www.hzdr.de/publications/Publ-39881 doi:10.14278/rodare.3213 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/rofex url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess sandwich packing two-phase flow ultrafast electron beam X-ray computed tomography CT image sequences of sandwich packings: B1-250 plus B1-500 at constant liquid rate of 50 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:2809 2025-02-19T08:23:00Z openaire_data user-energy user-fwd user-rodare

Hessenkemper, Hendrik Wang, Lantian Lucas, Dirk Shiyong, Tan Rui, Ni Ma, Tian 2024-04-17 Synthetic data set for 3D tracking of bubbles in multi-view measurements. https://rodare.hzdr.de/record/2809 10.14278/rodare.2809 oai:rodare.hzdr.de:2809 doi:10.1016/j.ijmultiphaseflow.2024.104932 url:https://www.hzdr.de/publications/Publ-38981 url:https://www.hzdr.de/publications/Publ-38980 url:https://www.hzdr.de/publications/Publ-40163 doi:10.14278/rodare.2808 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode 3D Lagrangian bubble tracking Bubble swarms Deformable bubbles Deep learning Data publication: 3D detection and tracking of deformable bubbles in swarms with the aid of deep learning models info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1756 2024-08-14T10:30:12Z openaire_data user-fwd user-energy user-rodare user-topflow

Bieberle, André Schubert, Markus Zippe, Cornelius Bieberle, André Loll, Rouven Pyka, Tobias Schubert, Markus 2022-06-29 For liquid fraction investigations in a rotating printed zick-zack foam (small) packed bed (RPB) angular-resolved time-averaged gamma-ray computed tomography (GammaCT) is applied. Liquid is injected by a multi point injector. This repository contains: the raw data of the gamma-ray CT scanner, the extracted projection-averaged profile data matrix and the restructured angular-resolved time-averaged sinogram data. https://rodare.hzdr.de/record/1756 10.14278/rodare.1756 oai:rodare.hzdr.de:1756 eng url:https://www.hzdr.de/publications/Publ-34855 doi:10.14278/rodare.1755 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Rotating Packed Bed Process Intensivation Computed Tomography RawData - Liquid fraction investigations in a RPB (small printed zick-zack foam, multi point) using GammaCT info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:395 2024-08-14T10:42:29Z openaire_data user-fwd user-hzdr user-rodare user-topflow

Geißler, Thomas Franz, Ronald Hampel, Uwe 2020-07-14 Experiments have been conducted to investigate the boiling heat transfer and local development of Critical Heat Flux (CHF) at subcooled flow boiling in a heated vertical tube. This data set contains the raw and processed Infrared thermography (IR) data along with measured operational data of the experimental facility for 3 K and 5 K subcooled flow boiling. The data was acquired within a research project which was funded by the Federal Ministry of Economic Affairs and Energy of Germany under grant number 1501473C. https://rodare.hzdr.de/record/395 10.14278/rodare.395 oai:rodare.hzdr.de:395 url:https://www.hzdr.de/publications/Publ-31320 doi:10.14278/rodare.394 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Critical Heat Flux (CHF) Subcooled flow boiling Infrared thermography Multi Geometry Critical Heat Flux Observation facility (MORENA): Investigation of Critical Heat Flux (CHF) at 3 K and 5 K subcooled flow boiling - Infrared thermography (IR) data set info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:2547 2025-04-22T05:23:35Z software user-fwd user-ecfunded user-energy user-rodare

Weier, Tom Nash, William Personnettaz, Paolo Weber, Norbert 2023-11-05 Goma (GO MAterials database) is a program enabling command line access to the YAML files distributed with Yamdb. It implements the equations necessary to calculate the thermophysical properties from the coefficients stored in the YAML database. Yamdb (Yet another materials data base) and Goma address the need to provide thermophysical properties of liquid metals and molten salts in an easily accessible manner. Mathematical relations describing material properties - usually determined by experiment - are taken from the literature. Equations and their coefficients are stored separately. The former can be implemented in any programming language (Go in this case) and the latter are kept in YAML files together with additional information (source, temperature range, composition, accuracy if available, etc). https://rodare.hzdr.de/record/2547 10.14278/rodare.2547 oai:rodare.hzdr.de:2547 eng info:eu-repo/grantAgreement/EC/H2020/963599/ url:https://www.hzdr.de/publications/Publ-41239 url:https://www.hzdr.de/publications/Publ-37574 url:https://www.hzdr.de/publications/Publ-37765 doi:10.14278/rodare.2546 url:https://rodare.hzdr.de/communities/ecfunded url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://opensource.org/licenses/MIT material properties liquid metal molten salts YAML Go Goma - using Yamdb material databases from the commandline info:eu-repo/semantics/other software

oai:rodare.hzdr.de:220 2024-08-14T10:45:48Z openaire_data openaire_data user-fwd user-hzdr user-rodare user-topflow

Bieberle, Martina Neumann-Kipping, Martin Wolf, Jan Hampel, Uwe Bieberle, André Schäfer, Thomas 2020-01-07 This data repository contains reconstructed and quantitatively analyzed gas-liquid two-phase distributions obtained from a centrifugal pump mock-up whose geometry is related to a commercially available industrial centrifugal pump. As measurement system the ultrafast electron beam X-ray CT scanner (UFXCT) is applied with a frame rate of 2,500 Hz, single-plane mode and a total scanning interval of 5 seconds. The data repository contains: Reconstructed raw data sets (Algebraic Reconstruction Technique from the UFO framework) for different inlet gas fractions (eps0.0xx) at constant 1300 rpm and for both rotating and back-rotated impeller positions, respectively Extracted RPM per CT scan (frame) including its raw data Extracted angular positions of the impeller mock-up per frame Calculated quantitative gas fraction data sets (static impeller position) Time-averaged gas fraction distribution and its corresponding averaged variance Pump and impeller mask data Additional data obtained from the SPS server with a sampling frequency of 1 Hz Data is stored in HDF5 format. https://rodare.hzdr.de/record/220 10.14278/rodare.220 oai:rodare.hzdr.de:220 eng doi:10.14278/rodare.76 doi:10.1115/1.4045497 url:https://www.hzdr.de/publications/Publ-30372 doi:10.14278/rodare.219 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess centrifugal pump gas-liquid two-phase flow ultrafast electron beam X-ray computed tomography Gas-liquid two-phase flow in a centrifugal pump mock-up with swirling gas flow injection at 1300 rpm info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3212 2024-11-12T10:18:29Z openaire_data user-fwd user-hzdr user-rodare user-rofex user-topflow

Barthel, Frank Sohr, Johanna Sprewitz, Uwe Schubert, Markus Bieberle, André Sohr, Johanna Barthel, Frank Sprewitz, Uwe Schubert, Markus 2024-11-12 This repository contains sequences of CT images of the two-phase flow in sandwich packings that are alternately arranged in a packing stack using B1-250 (specific geometric surface area is 250 m² /m³) for de-entrainment layer and B1-500 (specific geometric surface area is 500 m² /m³) for holdup layer. As measurement system the ultrafast electron beam X-ray computed tomography scanner was applied in dual plane scanning mode with a dual-imaging frequency of 1000 Hz. Operating parameters, the scanning plane as well as the tags "AB" for de-entrainment layer, "AN" for hold-up layer and "DRIVE" for an axial scan are encoded in the name of the data files. https://rodare.hzdr.de/record/3212 10.14278/rodare.3212 oai:rodare.hzdr.de:3212 eng url:https://www.hzdr.de/publications/Publ-39880 doi:10.14278/rodare.3211 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/rofex url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess sandwich packing two-phase flow ultrafast electron beam X-ray computed tomography CT image sequences of sandwich packings: B1-250 plus B1-500 at constant liquid rate of 20 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1049 2025-12-16T12:53:36Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Upadhyay, Kartik Mohite, Onkar Kriebitzsch, Sebastian Hänsch, Susann Draw, Mazen Evdokimov, Ilya Khan, Haris Krull, Benjamin Lehnigk, Ronald Liao, Yixiang Lyu, Hongmei Meller, Richard Schlegel, Fabian Tekavčič, Matej 2021-07-01 HZDR Multiphase Case Collection for OpenFOAM contains simulation setups for the open-source CFD software OpenFOAM with the HZDR multiphase addon. The simulation setups are separated into polydisperse bubbly flows utilising the HZDR Baseline model set according to Liao et al. (Chem Eng Sci, 2019, Vol. 202, 55-69), setups for a hybrid modelling approach (disperse and resolved interfaces) according to Meller et al. (Int J Numer Meth Fluids, 2021, Vol. 93, 748–773) and miscellaneous cases. Cases using the HZDR Baseline model set baseline/1998_Liu Reference for experiment: Liu, 3rd Int Conf Multiph Flow (ICMF), Vol. 98, 8-12 Reference for case setup: Rzehak et al., Nucl Eng Des, 2021, Vol. 374, 111079 Kriebitzsch and Rzehak, Fluids, 2016, Vol. 1, 29 baseline/2005_Lucas_et_al Reference for experiment: Lucas et al., Int J Multiph Flow, 2005, Vol. 31, 1304-1328 Reference for case setup: Lehnigk et al., AlChE J (submitted) baseline/2008_Shawkat Reference for experiment: Shawkat et al., Int J Multiph Flow, 2008, Vol. 34, 767-785 Reference for case setup: Kriebitzsch and Rzehak, Fluids, 2016, Vol. 1, 29 baseline/2009_Hosokawa Reference for experiment: Hosokawa and Tomiyama, Chem Eng Science, 2009, Vol. 64, 5308-5318 Reference for case setup: Rzehak et al., Nucl Eng Des, 2021, Vol. 374, 111079 baseline/2013_Hosokawa_and_Tomiyama Reference for experiment: Hosokawa and Tomiyama, Int J Heat Fluid Flow, 2013, Vol. 40, 97-105 Reference for case setup: Kriebitzsch and Rzehak, Fluids, 2016, Vol. 1, 29 Liao et al., Comp Fluids, 2020, Vol. 202, 104496 baseline/2016_Kim_et_al Reference for experiment: Kim et al., Exp Fluids, 2016, Vol. 57, 1432-1114 Reference for case setup: Liao et al., Comp Fluids, 2020, Vol. 202, 104496 Cases using the hybrid modelling approach hybrid/wenka/2D-MP3-23 Reference for experiment: Stäbler, Ph.D. thesis, 2007 Reference for case setup: Tekavčič et al., Nucl Eng Des, 2021, Vol. 379, 111223 hybrid/risingBubbleHysingEtAl2009 References for case setup: Hysing et al., Int J Numer Meth Fluids, 2009, Vol. 60, 1259-1288 Meller et al., Int J Numer Meth Fluids, 2021, Vol. 93, 748–773 Meller et al., Flow Turbul Combust (submitted) hybrid/risingBubbleBalcazarEtAl2015 Reference for experiment: Bhaga and Weber, J Fluid Mech, 1981, Vol. 105, 61-85 Reference for direct numerical simulation: Balcázar et al., Int J Heat Fluid Flow, 2015, Vol. 56, 91-107 References for case setup: Meller et al., Int J Numer Meth Fluids, 2021, Vol. 93, 748–773 hybrid/risingBubbleMellerEtAl2021 Reference for case setup: Meller et al., Flow Turbul Combust (submitted) Miscellaneous cases misc/multiphase/HZDRmultiphaseEulerFoam/1991_Akhtar_et_al Reference for experiment: Akhtar et al., AIChE J, 1991, Vol. 37, 1561–1570 Reference for case setup: Lehnigk et al., AlChE J (submitted) This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)". https://rodare.hzdr.de/record/1049 10.14278/rodare.1049 oai:rodare.hzdr.de:1049 eng url:https://www.hzdr.de/publications/Publ-32364 doi:10.14278/rodare.811 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Multiphase Flow Numerical Simulations OpenFOAM CFD Baseline model Multi-field two-fluid model Eulerian-Eulerian model Free Surface HZDR Multiphase Case Collection for OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:1880 2025-12-16T12:53:36Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Kriebitzsch, Sebastian Kumaresh, Pramodh Mohite, Onkar Upadhyay, Kartik Hänsch, Susann Draw, Mazen Evdokimov, Ilya Khan, Haris Krull, Benjamin Lehnigk, Ronald Liao, Yixiang Lyu, Hongmei Meller, Richard Schlegel, Fabian Tekavčič, Matej 2022-10-20 HZDR Multiphase Case Collection for OpenFOAM contains simulation setups for the open-source CFD software OpenFOAM extended by the HZDR Multiphase Addon for OpenFOAM. The simulation setups are separated into mono- and polydisperse bubbly flows utilising the HZDR Baseline model set, setups for a hybrid modelling approach (disperse and resolved interfaces) and miscellaneous cases. This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)". https://rodare.hzdr.de/record/1880 10.14278/rodare.1880 oai:rodare.hzdr.de:1880 eng url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-32364 doi:10.14278/rodare.811 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Multiphase Flow Numerical Simulations OpenFOAM CFD Baseline model Multi-field two-fluid model Eulerian-Eulerian model Free Surface HZDR Multiphase Case Collection for OpenFOAM info:eu-repo/semantics/other software

oai:rodare.hzdr.de:3862 2025-12-16T12:53:37Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Kriebitzsch, Sebastian Kumaresh, Pramodh Simroth, Patrick Mohite, Onkar Upadhyay, Kartik Hänsch, Susann Draw, Mazen Evdokimov, Ilya Khan, Haris Kamble, Vikrant Vinayak Krull, Benjamin Lehnigk, Ronald Liao, Yixiang Lyu, Hongmei Meller, Richard Schlegel, Fabian Li, Shiwang Tekavčič, Matej 2025-07-08 This repository contains simulation setups for the Multiphase Code Repository by HZDR for OpenFOAM Foundation Software. The simulation setups are separated into mono- and polydisperse bubbly flows utilising the Baseline model by HZDR set, setups for a morphology-adaptive multifield two-fluid model (disperse and resolved interfaces) and miscellaneous cases.Acknowledgement: OpenFOAM(R) is a registered trade mark of OpenCFD Limited, producer and distributor of the OpenFOAM(R) software via www.openfoam.com. The Multiphase Cases Repository by HZDR for OpenFOAM Foundation Software is not compatible with the software released by OpenCFD Limited, but is based on the software released by the OpenFOAM Foundation via www.openfoam.org https://rodare.hzdr.de/record/3862 10.14278/rodare.3862 oai:rodare.hzdr.de:3862 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 url:https://www.hzdr.de/publications/Publ-32364 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-35412 doi:10.14278/rodare.811 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Baseline model Multi-field two-fluid model Partial elimination algorithm Free Surface Euler-Euler Method Shell Python Gnuplot C++ Multiphase Cases Repository by HZDR for OpenFOAM Foundation Software info:eu-repo/semantics/other software

oai:rodare.hzdr.de:3883 2025-12-16T12:53:37Z software user-energy user-fwd user-hzdr user-openfoam user-rodare

Couteau, Arthur Kriebitzsch, Sebastian Kumaresh, Pramodh Simroth, Patrick Mohite, Onkar Upadhyay, Kartik Hänsch, Susann Draw, Mazen Evdokimov, Ilya Khan, Haris Kamble, Vikrant Vinayak Krull, Benjamin Lehnigk, Ronald Liao, Yixiang Lyu, Hongmei Meller, Richard Schlegel, Fabian Li, Shiwang Tekavčič, Matej 2025-07-25 This repository contains simulation setups for the Multiphase Code Repository by HZDR for OpenFOAM Foundation Software. The simulation setups are separated into mono- and polydisperse bubbly flows utilising the Baseline model by HZDR set, setups for a morphology-adaptive multifield two-fluid model (disperse and resolved interfaces) and miscellaneous cases.Acknowledgement: OpenFOAM(R) is a registered trade mark of OpenCFD Limited, producer and distributor of the OpenFOAM(R) software via www.openfoam.com. The Multiphase Cases Repository by HZDR for OpenFOAM Foundation Software is not compatible with the software released by OpenCFD Limited, but is based on the software released by the OpenFOAM Foundation via www.openfoam.org https://rodare.hzdr.de/record/3883 10.14278/rodare.3883 oai:rodare.hzdr.de:3883 eng doi:10.1002/aic.17539 doi:10.1007/s10494-021-00293-8 doi:10.1016/j.ces.2021.116807 url:https://www.hzdr.de/publications/Publ-32364 url:https://www.hzdr.de/publications/Publ-32161 url:https://www.hzdr.de/publications/Publ-32323 url:https://www.hzdr.de/publications/Publ-32356 url:https://www.hzdr.de/publications/Publ-35412 doi:10.14278/rodare.811 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/openfoam url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Multiphase Flow Numerical Simulations OpenFOAM Computational Fluid Dynamics Baseline model Multi-field two-fluid model Partial elimination algorithm Free Surface Euler-Euler Method Shell Python Gnuplot C++ Multiphase Cases Repository by HZDR for OpenFOAM Foundation Software info:eu-repo/semantics/other software

oai:rodare.hzdr.de:3971 2025-09-15T06:14:35Z openaire_data user-rodare user-fwd user-hzdr user-topflow

Wagner, Michael Wagner, Michael Bieberle, André 2025-09-12 The data repository contains the scripts (G4Beamline, MATLAB) and simulation data used for the investigations in the article 'Algebraic image reconstruction for muon scattering computed tomography without tracing'. README files are provided that explain the workflow from the raw data/simulation scripts to the quantitative parameters of the image analysis presented in Figures 2, 4 and 5 of the article. https://rodare.hzdr.de/record/3971 10.14278/rodare.3971 oai:rodare.hzdr.de:3971 eng doi:10.1063/5.0273571 url:https://www.hzdr.de/publications/Publ-41834 url:https://www.hzdr.de/publications/Publ-41755 doi:10.14278/rodare.3970 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess muon scattering computed tomography algebraic image reconstruction Data Repository for Algebraic image reconstruction for muon scattering computed tomography without tracing info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:549 2023-03-31T09:28:46Z user-hzdr user-fwd user-rodare

Papapetrou, Theodoros Nestor Lecrivain, Gregory Bieberle, Martina Boudouvis, Andreas Hampel, Uwe 2020-10-13 This material is related to the publication "An improved contact method for quantifying the mixing of a binary granular mixture", submitted on 13.05.2020 to Granular Matter. The original camera video, an intermediate masked video and the final preprocessed video used in the calculations, made from frames 4-1004 of the masked one, are included. The code used for all calculations in the paper and supplementary material, including the implementation of the mixing index evaluation methods, as well as the static artificial images and the generated data, are also included. All images used in the calculations are stored in the required data form. The figures of the paper are also included, as well as two supplementary materials: a version of Figure 12 with the points of the original contact method, and a discussion on the calculation of the minimum modified contact length. https://rodare.hzdr.de/record/549 10.14278/rodare.549 oai:rodare.hzdr.de:549 eng url:https://www.hzdr.de/publications/Publ-31095 url:https://www.hzdr.de/publications/Publ-31602 doi:10.14278/rodare.548 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode binary particle mixing rotating drum image analysis mixing index contact method variance method Code, data and supplementary material for: An improved contact method for quantifying the mixing of a binary granular mixture info:eu-repo/semantics/other other

oai:rodare.hzdr.de:2242 2026-02-27T10:03:59Z openaire_data user-hzdr user-fwd user-rodare user-rofex

Papapetrou, Theodoros Nestor Bieberle, Martina Barthel, Frank Hampel, Uwe Lecrivain, Gregory 2023-03-31 Original video camera data, and time-averaged, beam-hardening-corrected, drift-corrected dynamic and static UFXCT image data used in the associated publication; code used for the final processing; and the final processed data. More details are found in the publication and in the info in the respective folders. https://rodare.hzdr.de/record/2242 10.14278/rodare.2242 oai:rodare.hzdr.de:2242 eng url:https://www.hzdr.de/publications/Publ-36765 url:https://www.hzdr.de/publications/Publ-36766 doi:10.14278/rodare.2241 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/rofex info:eu-repo/semantics/restrictedAccess granular mixing rotating drum ultrafast X-ray computed tomography image processing Data and code: Investigating binary granular mixing in a rotating drum using ultrafast X-ray computed tomography info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:2176 2024-12-12T09:50:28Z openaire_data user-rodare user-energy user-fwd user-hzdr

Sommer, Anna-Elisabeth Draw, Mazen Wang, Lantian Schmidtpeter, Jan Gatter, Josefine Nam, Haein Eckert, Kerstin Rzehak, Roland 2023-02-28 Multiphase computational fluid dynamics (CFD) simulation is a useful tool to study the hydrodynamics in a bubble column, if appropriate closure models are known. Systematic assessment of different models is an ongoing venture that benefits from improved validation data. The present study accumulates a database on two-phase flow experiments in a bubble column. This is achieved by using a combination of Particle Image Velocimetry and Shadowgraphy to measure the liquid velocity field and gas dispersion properties simultaneously. This methodology is applied for different needle diameters and gas flow rates. A detailed description of the experimental setup can be found in Sommer et al. (2023). The experimental data (Table 1) described in this repository is structured into different folders and files as follows: Level 1: Folders classified by measurement configuration: TX_Jg_Y_Di_ZZZ as outlined in Table 1 TX = Identifier Jg_Y = Superficial gas velocity in mm/s Di_ZZZ = Inner diameter of the needle in µm Level 2: Folders classified by measurement height: Z_XXX Z_XXX = Measurement height in mm Level 3: csv files classified by their analysis parameter: Gas_Eg_ub_over_x.csv: Each csv file consists of five columns, namely the x-coordinate (in m), the gas holdup, the uncertainty of the gas holdup, the averaged bubble rising velocity (in m/s) and the corresponding uncertainty (in m/s). Liquid_v_z_over_x.csv: Each csv file consists of three columns, namely the x-coordinate (in m), the averaged liquid velocity (in m/s) and the corresponding uncertainty (in m/s). Table 1: Overview of the measurement cases in this repository. | ID | Diameter of needle orifice in µm | Superficial gas velocity in mm/s | |----|----------------------------------|----------------------------------| | T1 | 200 | 2 | | T2 | 200 | 4 | | T3 | 200 | 6 | | T4 | 600 | 2 | | T5 | 600 | 4 | | T6 | 600 | 6 | This project has received funding from the European Union's Horizon 2020 Marie Skłodowska-Curie Actions (MSCA), Innovative Training Networks (ITN), H2020-MSCA-ITN-2020 under grant agreement No. 955805, and the European Institute of Innovation and Technology (EIT). This body of the European Union receives support from the European Union's Horizon 2020 research and innovation programme. https://rodare.hzdr.de/record/2176 10.14278/rodare.2176 oai:rodare.hzdr.de:2176 eng doi:10.1002/ceat.202300130 url:https://www.hzdr.de/publications/Publ-37448 url:https://www.hzdr.de/publications/Publ-36732 doi:10.14278/rodare.2175 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Particle Image Velocimetry (PIV) Shadowgraphy Two-phase bubble column Hydrodynamics in a bubble column – Part 1: Two-phase flow info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:196 2024-08-14T11:26:03Z openaire_data user-fwd user-hzdr user-rodare user-topflow

Neumann-Kipping, Martin Hampel, Uwe Bieberle, André Neumann-Kipping, Martin Hampel, Uwe 2019-12-01 For the investigation of bubbly two-phase flow, which should serve as a future benchmark experiment for CFD code validation, an experimental study has been conducted at the Transient Two-Phase Flow (TOPFLOW) facility at Helmholtz-Zentrum Dresden – Rossendorf (HZDR) using ultrafast electron beam X-ray tomography (UFXRAY). In this study, flow constrictions were installed into a pipe to create a generic three-dimensional flow field as an advanced test case for CFD codes. UFXRAY provide valueable data of the gas phase dynamics with high temporal and spatial resolution. The provided data set contains the entire results of the experimental series L30 that uses a semi-circular flow constriction with a blockage ratio of 0.5. An additional info.txt file provides all required information (e.g. nomenclature or binary file structure) and is, thus, necessary for interpretation of the experimental data. This work is funded by the German Federal Ministry for Economic Affairs and Energy (BMWi) with the grant number 1501481 on the basis of a decision by the German Bundestag. https://rodare.hzdr.de/record/196 10.14278/rodare.196 oai:rodare.hzdr.de:196 doi:10.14278/rodare.122 doi:10.14278/rodare.137 doi:10.14278/rodare.124 doi:10.14278/rodare.139 doi:10.14278/rodare.197 url:https://www.hzdr.de/publications/Publ-29887 doi:10.14278/rodare.195 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess ultrafast X-ray computed tomography bubbly two-phase flow three-dimensional flow field two-phase pipe flow flow constriction experimental benchmark data Hydrodynamic experimental benchmark data of bubbly two-phase pipe flow around a semi-circular constriction info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:866 2021-03-12T07:22:34Z openaire_data user-fwd user-rodare

Barthel, Frank Brandt, Mira 2021-03-10 Simulationsdaten für die Masterarbeit Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie - Pos_* Simulationsdaten für den ROFEX 3 für verschiedene USRBINs mit EMFCUT=10keV - Ro1_* Simulationsdaten für den ROFEX 1 mit EMFCUT = 100keV https://rodare.hzdr.de/record/866 10.14278/rodare.866 oai:rodare.hzdr.de:866 deu url:https://www.hzdr.de/publications/Publ-32400 url:https://www.hzdr.de/publications/Publ-32413 doi:10.14278/rodare.865 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/restrictedAccess ROFEX FLUKA Electron beam Beam position Data (11/15) for: Analysen zur Anwendbarkeit verschiedener Strahlbahn-Monitoring-Konzepte für die ultraschnelle Röntgencomputertomografie info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:4547 2026-03-27T12:10:21Z openaire_data user-energy user-fwd user-hzdr user-rodare

Rox, Hannes Liang, Feng Baumann, Robert Marzec, Mateusz M. Sokołowski, Krystian Yang, Xuegeng Lasagni, Andrés F. van de Krol, Roel Eckert, Kerstin 2026-03-27 Understanding how bubbles influence the efficiency of water electrolysis is crucial to achieve economically competitive hydrogen, generated by renewable energy sources, such as wind and solar power. Water electrolysis is typically performed at high pressures to lower the cost of the energy-intensive mechanical compression required for the produced hydrogen. Thus, a better understanding of how absolute pressure affects electrochemical performance and bubble size is necessary. This data set compares four laser-structured Ni electrodes with different spatial periods (Λ = 30, 40, 60, and 100 μm) at a constant depth of ≈ 7 μm. The comparison is made in terms of electrode potential, detached bubble size, and the number of nucleation sites. The applied current density was varied between j = -25, -50, and -100 mA/cm², and the absolute cell pressure was varied between p = 1, 2, 4, and 6 bar. The electrolyte used was 1 M KOH. All experiments were carried out at a constant temperature of T = 293 K. A.) Description of Data.zip: An overview of all performed experiments is given in the file Summary.csv. The data is analyzed as described in the corresponding journal publication Bubble-induced versus thermodynamic voltage losses during pressurized alkaline water electrolysis. Each data set is stored in a .hdf5-file, with the relevant metadata incorporated into the attributes assigned to the groups/datasets within the .hdf5-file. The data files are structured in groups as follows: Electrochemical Measurement Data Galvanostatic Measurement Data Results Detected Bubbles Frontview Frontview Raw Images (only for LS_P_01.hdf5) With the exception of a single comprehensive data set comprising unprocessed images (LS_P_01.hdf5), the remaining raw images from all performed measurements can be made available upon request. B.) Description of Videos.zip: Example videos of non-structured and laser-structured electrodes at a current density of -100 mA/cm² are provided. The characteristic videos provided are named according to the following scheme: SpatialPeriod_Pressure_CurrentDensity E.g.: 100μm_6bar_-100mAcm-2 This project is supported by the Federal State of Saxony in terms of the "European Regional Development Fund" (H2-EPF-HZDR), the Helmholtz Association Innovation pool project "Solar Hydrogen", the Hydrogen Lab of the School of Engineering of TU Dresden, and BMBF (project ALKALIMIT, grant no. 03SF0731A). https://rodare.hzdr.de/record/4547 10.14278/rodare.4547 oai:rodare.hzdr.de:4547 eng url:https://www.hzdr.de/publications/Publ-43192 doi:10.14278/rodare.4546 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/hzdr url:https://rodare.hzdr.de/communities/rodare info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Alkaline water electrolysis Pressurized electrolysis Hydrogen evolution reaction Bubble dynamics Direct laser writing Data publication: Bubble-induced versus thermodynamic voltage losses during pressurized alkaline water electrolysis info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:145 2024-08-14T11:27:51Z openaire_data user-fwd user-rodare user-topflow

Sancho Martinez, Diego Sprewitz, Uwe Barthel, Frank Bieberle, Martina Hampel, Uwe Stannarius, Ralf Bieberle, Martina Barthel, Frank Sancho Martinez, Diegoe Stannarius, Ralf 2019-08-16 The outflow of hydrogel spheres from a cylindrical storage container with narrow outlet of two different sizes is imaged by means of ultrafast X-ray computed tomography (UFXCT) at different heights above the outlet. Sequences of cross-sectional images were recorded over 30 s with a frame rate of 1000 fps in dual plane mode. hydrogel spheres diameter: 6 mm, diameter of cylindrical container: 90 mm, outlet diameter: 19 mm and 24 mm, filling height: 80 cm, measurement heights: 10 mm, 30 mm, 50 mm, 90 mm and 200 mm above outlet https://rodare.hzdr.de/record/145 10.14278/rodare.145 oai:rodare.hzdr.de:145 eng doi:10.14278/rodare.143 url:https://www.hzdr.de/publications/Publ-29575 doi:10.1088/1367-2630/ab5893 doi:10.14278/rodare.144 url:https://rodare.hzdr.de/communities/fwd url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess ultrafast measurement X-ray CT silo discharge UFXCT data of silo discharge of hydrogel spheres info:eu-repo/semantics/other dataset .eJyVjsFvgjAchf-X35kttIAMkh1Y5kwcFbvQbnoxTamMUZQADtD4v8tp2c308pL38vLlu0CrVAah_egGs8DFswAjhJ-mtKAWuYIQW1D2oslbCC9QqU5kohPrRu2LAUI4imKXSbAmTDfVU6uah32fwXVaZHPUeldMdJBfXMuDZmLBTx8Vtzc490ka-eSHIpJKb5VGXlJ5vxtHezFf1szhSOrlO-UUCb2lbCF9cibOKiUuOUc4OWRe_Kk7yYOelXVHy-81e6NjwrYvMZ___6K73z-H-WjgMBo42AYOg4HD2YDbG3CHu9zX9hmuN5LJutI.adDImw.gmTu_SnS7uUObycftQOubPRvz5U