2026-05-20T05:02:24Z https://rodare.hzdr.de/oai2d

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: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:3992 2025-10-20T06:45:03Z openaire_data user-rodare user-topflow

Inderwies, Korbinian Boden, Stephan Schubert, Markus Klein, Harald Rehfeldt, Sebastian Hampel, Uwe 2025-09-24 The present dataset comprises the results of X-ray micro-computertomographic (micro-CT) examinations and subsequent quantification of fouling on random packings. A screening test rig was integrated in a micro-CT scanner, enabling high-resolution imaging of crystallization fouling on three industrial random packings (Hiflow 15-7 PP made of polypropylene, Hiflow 20-4 made of ceramic, and Pall-Ring 15 made of metal). Using this technique, initial deposits have been visualized and the non-linear growth of deposits was monitored during the experiment. Quantitative analysis was performed by processing the reconstructed attenuation datasets to determine the volumetric fraction of deposits. https://rodare.hzdr.de/record/3992 10.14278/rodare.3992 oai:rodare.hzdr.de:3992 url:https://www.hzdr.de/publications/Publ-41881 url:https://www.hzdr.de/publications/Publ-41660 doi:10.1021/acs.iecr.5c03093 doi:10.14278/rodare.3991 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Crystallization Fouling Random Packing X-Ray Computed Tomography Data publication: Investigation of Fouling on Random Packing using Microfocus X-ray Computed Tomography info:eu-repo/semantics/other dataset

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: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:1212 2024-08-14T10:37:52Z openaire_data user-rodare user-topflow

Mohseni, Ehsan Eduarda Chiamulera, Maria Reinecke, Sebastian Felix Hampel, Uwe 2021-10-18 raw data and processed data for the publication. https://rodare.hzdr.de/record/1212 10.14278/rodare.1212 oai:rodare.hzdr.de:1212 url:https://www.hzdr.de/publications/Publ-33261 url:https://www.hzdr.de/publications/Publ-33258 doi:10.14278/rodare.1211 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/closedAccess Bubble formation Sub-millimeter orifice Gas reservoir Bubble dynamics Modeling Data for: Bubble formation from sub-millimeter orifices: experimental analysis and modeling 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: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: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: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: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: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: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:3216 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/3216 10.14278/rodare.3216 oai:rodare.hzdr.de:3216 eng url:https://www.hzdr.de/publications/Publ-39879 doi:10.14278/rodare.3215 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 10 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:373 2024-08-14T10:43:08Z openaire_data user-fwd user-hzdr user-rodare user-topflow

Assis Dias, Felipe de Nunes Dos Santos, Eduardo Da Silva, Marco Jose Schleicher, Eckhard Morales, R. E. M. Hewakandamby, B. Hampel, Uwe 2020-06-16 Data set used on the work "New Algorithm to Discriminate Phase Distribution of Gas-Oil-Water Pipe Flow with Dual-Modality Wire-Mesh Sensor". Data were acquired using a dual-modality wire-mesh sensor designed by the Brazilian partner UTFPR. The experiments were performed at the University of Nottingham in a water-oil liquid-liquid flow loop. However, the gas phase was introduced into the system to perform stratified three-phase flow measurements as a proof of concept. In this set of data, you find the calibrated amplitude and phase signals of nine points as well as permittivity and conductivity estimations (post-processing). https://rodare.hzdr.de/record/373 10.14278/rodare.373 oai:rodare.hzdr.de:373 eng url:https://www.hzdr.de/publications/Publ-31152 url:https://www.hzdr.de/publications/Publ-31145 doi:10.14278/rodare.372 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 complex impedance flow visualization gas-oil-water horizontal flow three-phase wire-mesh sensor New algorithm to discriminate phase distribution of gas-oil-water pipe flow with dual-modality wire-mesh sensor - Data set info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:818 2024-08-14T10:39:45Z openaire_data user-rodare user-topflow

Boden, Stephan 2021-02-23 Raw and preprocessed projection data from a microfocus X-ray CT of a plastic toy ("HIPPO"). To be used as demo dataset for the PARIS reconstruction framework. https://rodare.hzdr.de/record/818 10.14278/rodare.818 oai:rodare.hzdr.de:818 url:https://www.hzdr.de/publications/Publ-32348 doi:10.14278/rodare.817 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Microfocus X-ray Computed Tomography of a Plastic Toy ("HIPPO"): Projection Data info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:289 2024-08-14T10:44:11Z openaire_data user-fwd user-rodare user-topflow

Barthel, Frank Windisch, Dominic Bieberle, André Bieberle, André 2020-04-17 The measurements in this dataset repository contain raw signal data obtained from novel multi-plane detectors that are experimentally tested with the ultrafast electron beam X-ray CT (UFXCT) scanner at the HZDR. The CT scanner is operated with a constant deflection frequency of 2 kHz, an acceleration voltage of +150 keV and in dual-plane CT scanning mode. The voltage output signals of four multi-plane detector channels are sampled with 2 MHz and 24 bit (±5 V) using a commercial eight-channel data acquisition system (LTT24, Labortechnik Tasler GmbH). The applied reverse voltage to the avalanche photodiodes and the three deflection coil signals are recorded simultaneously. The detectors are collimated with lead and are analysed for various electron beam currents, various detector heights and two different designs. Data processing can be found in the corresponding GITLAB repository. https://rodare.hzdr.de/record/289 10.14278/rodare.289 oai:rodare.hzdr.de:289 eng url:https://gitlab.hzdr.de/fwdf/measurementscience/projects/ufxct/3detector url:https://www.hzdr.de/publications/Publ-30914 url:https://www.hzdr.de/publications/Publ-30878 doi:10.14278/rodare.288 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 scintillation detectors multi-plane imaging Measurements to verify different concepts of multi-plane detectors for ultrafast electron beam X-ray computed tomography info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1754 2024-08-14T10:30:52Z openaire_data user-fwd user-rodare user-topflow

Bieberle, André Schubert, Markus Zippe, Cornelius Bieberle, André Loll, Rouven Pyka, Tobias Schubert, Markus 2022-06-24 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 12 baffle disc 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/1754 10.14278/rodare.1754 oai:rodare.hzdr.de:1754 eng url:https://www.hzdr.de/publications/Publ-34853 doi:10.14278/rodare.1753 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, 12 baffles) using GammaCT info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:206 2024-08-14T10:46:49Z openaire_data user-rodare user-topflow

Unger, Sebastian Beyer, Matthias Szalinski, Lutz Hampel, Uwe 2019-11-26 These are the raw data and the processed data of the journal paper "Thermal and flow performance of tilted oval tubes with novel fin designs". The raw data contains the measured values on the experimental setup and the processed data contains the data of the data used in the corresponding journal publication. https://rodare.hzdr.de/record/206 10.14278/rodare.206 oai:rodare.hzdr.de:206 eng url:https://www.hzdr.de/publications/Publ-30003 doi:10.1016/j.ijheatmasstransfer.2020.119621 doi:10.14278/rodare.205 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 Thermal and flow performance of tilted oval tubes with novel fin designs info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1218 2024-08-14T10:37:34Z openaire_data user-rodare user-topflow

Parra Ramirez, Mario Alejandro Ristau, Florian Mohseni, Ehsan Herrmann-Heber, Robert Reinecke, Sebastian Hampel, Uwe 2021-10-19 Data set for the publication in the wwt modernisierung magazine with the tittle "Sauerstoffeintragstechnologien für die biologische Abwasseraufbereitung". https://rodare.hzdr.de/record/1218 10.14278/rodare.1218 oai:rodare.hzdr.de:1218 deu url:https://www.hzdr.de/publications/Publ-33265 url:https://www.hzdr.de/publications/Publ-33256 doi:10.14278/rodare.1217 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/closedAccess Aeration Bubble size Dynamic operation Data for "Sauerstoffeintragstechnologien für die biologische Abwasseraufbereitung" info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:550 2024-08-14T10:44:27Z openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data user-rodare user-topflow

Unger, Sebastian Beyer, Matthias Pietruske, Heiko Szalinski, Lutz Hampel, Uwe 2020-03-23 These are the raw data and the processed data of the journal paper "Air-side thermal and flow performance study of additively manufactred tube bundle heat exchagers with novel fin designs". The raw data contains the measured values on the experimental setup and the processed data contains the data of the data used in the corresponding journal publication. https://rodare.hzdr.de/record/550 10.14278/rodare.550 oai:rodare.hzdr.de:550 eng url:https://www.hzdr.de/publications/Publ-30840 url:https://www.hzdr.de/publications/Publ-30842 doi:10.14278/rodare.271 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 Air-side thermal and flow performance study of additively manufactred tube bundle heat exchagers with novel fin designs info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:149 2024-08-14T11:27:36Z openaire_data user-rodare user-topflow

Vishwakarma, V. Schubert, M. Vishwakarma, Vineet Rigos, Nireas Schubert, Markus Hampel, Uwe 2019-09-02 Vapor-liquid equilibrium data are the prerequisites for determining column efficiencies. For this purpose, industrial binary distillation operations are selected from the literature. At representative column pressures, high resolution data are obtained for the mixtures using suitable thermodynamic models in Aspen Plus (v10). VLE data for binary mixtures obtained from various thermodynamic models at representative column pressures. https://rodare.hzdr.de/record/149 10.14278/rodare.149 oai:rodare.hzdr.de:149 eng url:https://www.hzdr.de/publications/Publ-29624 doi:10.14278/rodare.148 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 column efficiency vapor-liquid equilibrium thermodynamic model Vapor-liquid equilibrium data for efficiency estimation of tray columns info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1230 2024-08-14T10:37:01Z openaire_data user-rodare user-topflow

Skouteris, Georgios Parra Ramirez, Mario Alejandro Reinecke, Sebastian Hampel, Uwe 2021-11-02 Input files and simulation results for the related publication. https://rodare.hzdr.de/record/1230 10.14278/rodare.1230 oai:rodare.hzdr.de:1230 eng url:https://www.hzdr.de/publications/Publ-33317 url:https://www.hzdr.de/publications/Publ-33277 doi:10.14278/rodare.1229 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/1.0/legalcode Energy flexibility Wastewater treatment plant Benchmark simulation model 1 Data for "Energy Flexibility Chances for the Wastewater Treatment Plant of the Benchmark Simulation Model 1" info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1746 2024-08-14T10:31:07Z openaire_data user-fwd 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 32 baffle disc 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/1746 10.14278/rodare.1746 oai:rodare.hzdr.de:1746 eng url:https://www.hzdr.de/publications/Publ-34852 doi:10.14278/rodare.1745 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, 32 baffles) using GammaCT info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3236 2024-11-08T12:18:26Z openaire_data user-rodare user-topflow

Heydari, Nasim Kipping, Ragna 2024-10-30 This set contains experimental data obtained for the investigation of hydrodynamics of a bubble column under offshore floating conditions. The motions roll, pitch, roll and pitch as well as the static bubble column have been investigated. The frequency of the motion has been varried while the flow rate of the gas was set constant to 3 l/min. Experiments were performed in a bubble column with 100 mm inner diameter and hydrodynamics were investigated by meas of wire-mesh sensor measurements. Experiments were perfomed at ambient temperature and pressure conditions. https://rodare.hzdr.de/record/3236 10.14278/rodare.3236 oai:rodare.hzdr.de:3236 eng url:https://www.hzdr.de/publications/Publ-39860 url:https://www.hzdr.de/publications/Publ-37266 doi:10.14278/rodare.3235 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess bubble column offshore conditions moving column Data for bubble column reactor at offshore floating conditions info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1389 2024-08-14T10:33:37Z openaire_data user-rodare user-topflow

Mohseni, Ehsan 2022-01-19 This is the data used in the thesis "Bubble Formation from Sub-millimetre Orifices". https://rodare.hzdr.de/record/1389 10.14278/rodare.1389 oai:rodare.hzdr.de:1389 eng url:https://www.hzdr.de/publications/Publ-34062 url:https://www.hzdr.de/publications/Publ-34063 doi:10.14278/rodare.1388 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/closedAccess Bubble formation Sub-millimetre orifice Bubble dynamics Modelling Bubble in-rush Controlled bubble formation Data publication: Bubble Formation from Sub-millimetre Orifices info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1224 2024-08-19T09:20:08Z openaire_data user-fwd user-energy user-rodare user-topflow

Boden, Stephan Moonesi Shabestary, Amirhosein Bieberle, André Pietruske, Heiko Hampel, Uwe 2021-10-27 This archive contains the processed X-ray data of the measurement campaign "Investigation of flow morphology and heat transfer in an inclined tube", which was conducted between June 2020 and June 2021 at the thermal hydraulic test facility COSMEA (COndenSation test rig for flow Morphology and hEAt transfer studies) at Helmholtz-Zentrum Dresden - Rossendorf (HZDR). The flow morphology of high-pressure (up to 65 bar) steam condensation in a slightly inclined tube at low inlet steam qualities (down to 2.8%) were are studied. Both X-ray computed tomography as well as X-ray radioscopy have been applied. The results include images of the local condensate distribution in selected cross-sections of the condenser tube as well as time resolved projections of the condensate distribution. This work was funded by the German Federal Ministry of Economic Affairs and Energy (BMBF) with the grant number 02NUK041B on the basis of a decision by the German Bundestag. The responsibility for the content of this publication lies with the authors. https://rodare.hzdr.de/record/1224 10.14278/rodare.1224 oai:rodare.hzdr.de:1224 url:https://www.hzdr.de/publications/Publ-33300 url:https://www.hzdr.de/publications/Publ-38134 doi:10.14278/rodare.1223 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 steam condensation two-phase flow X-ray tomography X-ray radioscopy Data publication: Flow morphology of high-pressure steam condensation in an inclined tube at low inlet steam qualities info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:4 2024-08-19T13:13:55Z openaire_data user-fwd user-rodare user-topflow

Beyer, Matthias Szalinski, Lutz Bieberle, André Ehrlich, Alexander Boden, Stephan Bieberle, A. Boden, S. Beyer, M. Hampel, U. 2018-03-20 At the COSMEA-I facility cross-sectional distributions of the condensated steam is measured at five different positions along a slightly inclined condensator-tube using adapted conventional CT imaging technique based on X-ray. This data set contains the reconstructed raw data of the CT imaging scans. https://rodare.hzdr.de/record/4 10.14278/rodare.4 oai:rodare.hzdr.de:4 eng url:https://www.hzdr.de/publications/Publ-27228 url:https://www.hzdr.de/publications/Publ-29452 doi:10.14278/rodare.3 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 Passive heat transfer Conventional CT imaging Reconstructed raw data of the CT imaging scan Results of the stationary measurements at COSMEA-I facility - CT part info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:379 2024-08-14T10:42:53Z openaire_data user-fwd user-rodare user-topflow

Tas-Köhler, Sibel Franz, Ronald Boden, Stephan Hampel, Uwe 2020-07-08 The test section of the rod bundle experimental facility at HZDR consists of a vertically aligned PMMA channel with an upward flow of the working fluid. The cross-section of the channel is quadratic (inner edge length: 37 mm) and contains nine directly electrically heated rods (material: titanium-alloy, diameter: 10 mm, wall thickness: 0.3 mm) which are arranged in an orthogonal 3 by 3 matrix (rod axis distance: 12.8 mm). Circa 190 mm downstream of the start of the heating zone a 30 mm long spacer for the rods with tilted flow guiding vanes is mounted. These vanes are aimed to increase lateral flow velocities within the subchannels. Working fluid was octafluorocyclobutane (CAS 115-25-3, RC318). The experimental facility is comprehensively instrumented for measurement of flow, temperature and pressure/pressure difference. For non-invasive three-dimensional high-resolution measurement of a temporally averaged volumetric void fraction within the working fluid flowing around the heating rods in the subchannels an X-ray computer tomography measurement system was set up. The presented dataset contains measurement data of the experimental facility's instrumentation and tomographic void fraction data of experiments with four different configurations of the flow guiding vanes (without vanes, 20°, 29°, 40°) for four different flow velocities between 0.4 m/s and 1.3 m/s at a heat flow density of 85.7 kW/m². 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/379 10.14278/rodare.379 oai:rodare.hzdr.de:379 eng url:https://www.hzdr.de/publications/Publ-35438 url:https://www.hzdr.de/publications/Publ-31307 url:https://www.hzdr.de/publications/Publ-35438 url:https://www.hzdr.de/publications/Publ-36690 doi:10.14278/rodare.378 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 X-Ray Computed Tomography Phase fraction Rod bundle Boiling flow Microfocus X-ray tomography data set of boiling flow in vertical rod bundle with spacer grid at constant heat flux condition info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1262 2024-08-14T10:38:09Z openaire_data user-energy user-rodare user-topflow

Kipping, Ragna Hampel, Uwe 2021-11-15 This data set contains the processed data from ultrafast X-ray tomography measurements in a bubble column. Measurements were performed in a bubble column with 100 mm inner diameter and with deionized water and nitrogen as liquid and gas phase, respectively. This data set contains the measurement from the measurement height located 0.7m above the gas sparger. Hydrodynamic data, such as bubble size distribution and gas holdup distribution are provided. Furthermore, inter-bubble distances of gas bubbles (distance of the nearest neighbours) are given. Further detailes on the experiments and the processed data is provided 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/1262 10.14278/rodare.1262 oai:rodare.hzdr.de:1262 doi:10.1016/j.cej.2021.133486 url:https://www.hzdr.de/publications/Publ-33036 url:https://www.hzdr.de/publications/Publ-33024 doi:10.14278/rodare.1112 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess bubbly flows clustering UFXCT Data for: On Inter-bubble Distances and Bubble Clustering in Bubbly Flows: An Experimental Study info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:123 2024-08-14T11:28:45Z openaire_data user-fwd user-rodare user-topflow

Neumann, Martin Hampel, Uwe Bieberle, André Beyer, Matthias Sprewitz, Uwe Neumann, 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 obstacles 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 obstacle with a blockage ratio of 0.5. 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/123 10.14278/rodare.123 oai:rodare.hzdr.de:123 eng url:https://www.hzdr.de/publications/Publ-29353 url:https://www.hzdr.de/publications/Publ-29354 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/openAccess https://creativecommons.org/licenses/by/4.0/legalcode 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 obstacle info:eu-repo/semantics/other dataset

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: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:2662 2024-08-14T10:27:18Z software user-rodare user-topflow

Schunk, Christoph 2024-01-11 DATIV is an open source, low cost, distributed, portable sensor system which incorporates cameras and particulate matter sensors (PMS). This system can employ multiple sensors simultaneously and can be remotely operated using a web based GUI. https://rodare.hzdr.de/record/2662 10.14278/rodare.2662 oai:rodare.hzdr.de:2662 url:https://github.com/chsc/DATIV/tree/v1.0.0 url:https://www.hzdr.de/publications/Publ-39040 url:https://www.hzdr.de/publications/Publ-38035 doi:10.14278/rodare.2661 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/openAccess https://opensource.org/licenses/Apache-2.0 Raspberry Pi Camera Particulate Matter SBC Aerosol Sensor COVID-19 Wi-Fi Ventilation DATIV-Dynamic Aerosol Transport for Indoor Ventilation with Smart Array of Particulate MAtter Sensors (SAPMAS) info:eu-repo/semantics/other software

oai:rodare.hzdr.de:2578 2024-08-14T10:28:00Z openaire_data user-rodare user-topflow

Kipping, Ragna Schleicher, Eckhard 2023-11-28 This data set contains the processed data of the wire-mesh sensor, obtained in a flow loop with inner diameter of 50 mm with a vertical section of 3 m length. The dimension of the sensor is 16x16 wires and a lateral wire distance of 3.125 mm. Each file contains data of 60 s measurement time with 10 kHz samling frequency. The set up was operated with pressurized air and deionized water. The experimental matrix contains meausrements at different superficial velocities of the gas and the liquid. Thus different flow pattern are observed. For injection of the gas two different types have been used. In the first set of experiments (files 1- 61, *injection1*) the gas was injected with a small tube with inner diameter of 9 mm. In the second set of experiments (files 101 - 151, *injection2*) the gas was injected with a small pipe of 25 mm inner diameter. An overview of the experimental conditions for the two sets of experiments are summarized in the excel file. The corresponding *.zip files contain the processed data. These are void files, which contain the gas holdup in each crossing point and for all time steps of the measurement stack. Additionally the time averaged cross sectional gas holdup distribution (*.epsxy), the time averaged radial gas holdup (*.epsrad_20) and the cross sectional average gas holdup at each time step (*.epst) is provided, https://rodare.hzdr.de/record/2578 10.14278/rodare.2578 oai:rodare.hzdr.de:2578 url:https://www.hzdr.de/publications/Publ-37954 doi:10.14278/rodare.2577 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess two-phase flow wire-mesh sensor Wire-mesh sensor data for vertical upward gas-liquid flow 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:3344 2025-01-06T13:32:50Z openaire_data user-rodare user-topflow user-rofex

Windisch, Dominic Barthel, Frank Bieberle, André Windisch, Dominic 2024-12-17 This repository contains sequences of CT images of the two-phase flow in a bubble column consisting of a DN100-PN4 PVC pipe filled with water. 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 2,000 Hz. Data containers starting with “SingleBubble” contain image sequences of scans where a single bubble was injected at the bottom of the column using a magnetically operated valve which was open for the time specified in the directory name. Data containers starting with “PolydisperseDynamic” contain image sequences of scans where a background flow with 01 to 20 sl/min was induced via a needle sparger in addition to the single bubble (as described before). During each “PolydisperseDynamic” scan, the scan position was adapted to track the large bubble. The HDF5 files hold the reconstructed image data (dataset “reco”), each images scanning plane (dataset “plane”), and each images vertical scan position (dataset “scanPosition”). https://rodare.hzdr.de/record/3344 10.14278/rodare.3344 oai:rodare.hzdr.de:3344 eng url:https://www.hzdr.de/publications/Publ-40434 doi:10.14278/rodare.3343 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 ultrafast X-ray computed tomography bubble column Investigations on Polydisperse gas phase - Dynamic info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:283 2024-08-14T10:42:10Z openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data openaire_data user-energy user-rodare user-topflow

Kipping, Ragna Hampel, Uwe 2020-04-02 For the investigation of bubble column hydrodynamics an experimental study using ultrafast electron beam X-ray tomography (UFXCT) has been carried out. Local hydrodynamic parameters were measured in a DN100 bubble column using two types of capillary gas sparger, which are named as 'Type A' and 'Type B' . Nitrogen is used as gas phase and deionized water as liquid phase. For Type B sparger additionally, experiments with sodium hydroxide of different concentrations are given. Experiments were carried out at two different measurement heights, which are located at 10 (L/D = 1) and 70 cm (L/D = 7) above the gas sparger An additional readme.txt file provides all required information and is necessary for the interpretation of the experimental data. This work was funded by the German Research Foundation (DFG), reactive bubbly flows (SPP1740; HA3088/8-1, HA3088/8-2). https://rodare.hzdr.de/record/283 10.14278/rodare.283 oai:rodare.hzdr.de:283 eng url:https://www.hzdr.de/publications/Publ-31529 url:https://www.hzdr.de/publications/Publ-30434 doi:10.14278/rodare.282 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Bubble column hydrodynamics Uniform bubbly flow Ultrafast X-ray computed tomography SPP1740 Experimental gas phase hydrodynamic data of lab scale bubble column info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:603 2024-08-14T10:41:39Z openaire_data user-rodare user-topflow

Marchini, Sara Vishwakarma, Vineet Schubert, Markus Hampel, Uwe 2020-11-26 This data contain the outcome of absorbance measurements performed via UV-Spectroscopy on liquid samples containing isobutyl acetate in various concentration. The liquid samples have been taken from several deck positions on a distillation sieve tray to determine the liquid concentration distribution and have been used to determine tray and point efficiency in a post-processing stage. https://rodare.hzdr.de/record/603 10.14278/rodare.603 oai:rodare.hzdr.de:603 eng doi:10.1021/acs.iecr.0c05962 url:https://www.hzdr.de/publications/Publ-31789 url:https://www.hzdr.de/publications/Publ-31747 doi:10.14278/rodare.602 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess distillation concentration distribution sieve tray point efficiency tray efficiency Experimental liquid concentration distribution for air-led stripping of isobutyl acetate in sieve tray column 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: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:4642 2026-05-11T05:58:27Z openaire_data user-fwd user-rodare user-topflow

Unger, Sebastian Döß, Alexander 2026-05-05 This dataset contains operating conditions from the TERESA facility during an experimental campaign investigating flooding points of wire mesh demisters (see the associated journal paper for details). Each row reports time-averaged values over 45 minutes of steady-state operation. Experiments were conducted with the fluid (3M™ Novec™ 649) at saturation conditions defined by system pressure. F-factors are calculated based on a mesh diameter of 275 mm, while individual meshes are differentiated by their specific surface area (column 2). Fluid properties were computed using REFPROP (v10). Liquid carryover values are corrected (see Appendix A1 of the journal paper). Entries labeled “uncertain” indicate marginal measurements of entrained liquid below the confidence threshold and should be treated as qualitative only. CSV structure: Lines 1–2: headers (variable names and units) Subsequent lines: one experiment per row Export settings: Windows-1252 encoding; comma-separated fields; double-quote text delimiter https://rodare.hzdr.de/record/4642 10.14278/rodare.4642 oai:rodare.hzdr.de:4642 eng url:https://www.hzdr.de/publications/Publ-43341 url:https://www.hzdr.de/publications/Publ-43369 doi:10.14278/rodare.4641 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 Wire mesh demister Flooding point Liquid carryover TERESA Droplets Distillation column Dataset for: Prediction Methods for Flooding Points in Knitted Wire Mesh Demisters at Relevant Fluid properties info:eu-repo/semantics/other dataset

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: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:1113 2024-08-14T10:38:09Z openaire_data user-energy user-rodare user-topflow

Kipping, Ragna Hampel, Uwe 2021-08-12 This data set contains the processed data from ultrafast X-ray tomography measurements in a bubble column. Measurements were performed in a bubble column with 100 mm inner diameter and with deionized water and nitrogen as liquid and gas phase, respectively. This data set contains the measurement from the measurement height located 0.7m above the gas sparger. Hydrodynamic data, such as bubble size distribution and gas holdup distribution are provided. Furthermore, inter-bubble distances of gas bubbles (distance of the nearest neighbours) are given. Further detailes on the experiments and the processed data is provided 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/1113 10.14278/rodare.1113 oai:rodare.hzdr.de:1113 url:https://www.hzdr.de/publications/Publ-33036 url:https://www.hzdr.de/publications/Publ-33024 doi:10.14278/rodare.1112 url:https://rodare.hzdr.de/communities/energy url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess bubbly flows, clustering, UFXCT Data for: On Inter-bubble Distances and Bubble Clustering in Bubbly Flows: An Experimental Study info:eu-repo/semantics/other dataset

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: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: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:43 2024-08-14T11:30:22Z openaire_data user-fwd user-rodare user-topflow

Schubert, Markus Bieberle, André Gross, Kai Gladyszewski, Konrad 2018-08-17 In this study, gamma-ray computed tomography is employed to quantify the liquid hold-up and its distribution in a rotating packed bed using: different insets different rotational speeds different fluid rate flows https://rodare.hzdr.de/record/43 10.14278/rodare.43 oai:rodare.hzdr.de:43 eng url:https://www.hzdr.de/publications/Publ-27826 doi:10.14278/rodare.42 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 gas-liquid flow pattern local liquid hold-up rotating packed bed fast imaging computed tomography Analysis of flow patterns in a rotating packed bed using gamma-ray computed tomography info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3224 2025-02-24T11:39:28Z openaire_data user-rodare user-topflow user-rofex

Barthel, Frank Sohr, Johanna Sprewitz, Uwe Schubert, Markus Bieberle, André Sohr, Johanna Barthel, Frank Sprewitz, Uwe Schubert, Markus 2024-10-23 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/3224 10.14278/rodare.3224 oai:rodare.hzdr.de:3224 eng url:https://www.hzdr.de/publications/Publ-39877 doi:10.14278/rodare.3223 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 20 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

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: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: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: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: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

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: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:320 2024-08-14T10:43:26Z openaire_data user-rodare user-topflow

Unger, Sebastian Beyer, Matthias Pietruske, Heiko Szalinski, Lutz Hampel, Uwe 2020-05-10 These are the raw data and the processed data of the journal paper " Natural convection heat transfer performance of additively manufactured tube bundle heat exchangers with novel fin desigs". The raw data contains the measured values on the experimental setup and the processed data contains the data of the data used in the corresponding journal publication. https://rodare.hzdr.de/record/320 10.14278/rodare.320 oai:rodare.hzdr.de:320 eng url:https://www.hzdr.de/publications/Publ-31008 url:https://www.hzdr.de/publications/Publ-31011 doi:10.14278/rodare.319 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 Natural convection heat transfer performance of additively manufactured tube bundle heat exchangers with novel fin design 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: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:3058 2025-02-21T13:20:31Z openaire_data user-rodare user-topflow

Marchini, Sara Kipping, Ragna Tim Dalu, Kischnik 2024-07-17 The dataset was acquired over several measurement campaigns and contains differential pressure measurements in bubble columns of several diameters (100, 150, 330 mm) operated with gas in continuum (dry air) and liquid in batch. The fact that no humidification was provided was shown to have negligible influence. Liquid temperature was between 20-22°C. Pressure was atmospheric (column open to the environment). For additional details, refer to the READ_ME and DETAILS_Setup files included in the dataset. https://rodare.hzdr.de/record/3058 10.14278/rodare.3058 oai:rodare.hzdr.de:3058 url:https://www.hzdr.de/publications/Publ-39704 url:https://www.hzdr.de/publications/Publ-39567 doi:10.14278/rodare.3057 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess bubble column gas holdup differential pressure flow map Differential pressure measurements in bubble columns of different diameter, operated with various physical systems 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: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: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: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:215 2024-08-14T10:46:22Z 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 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/215 10.14278/rodare.215 oai:rodare.hzdr.de:215 eng doi:10.14278/rodare.76 doi:10.1115/1.4045497 url:https://www.hzdr.de/publications/Publ-30370 doi:10.14278/rodare.214 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 1480 rpm info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:127 2024-08-14T11:29:01Z openaire_data user-fwd user-rodare user-topflow

Beyer, Matthias Pietruske, Heiko Boden, Stephan Szalinski, Lutz Bieberle, André Hampel, Uwe Bieberle, André Beyer, Matthias Pietruske, Heiko Hampel, Uwe Boden, Stephan 2019-05-20 This repository contains reconstructed and analysed CT data obtained from the COSMEA-I test facility that is operated under stationary operating conditions. Furthermore, a full CAD drawing set is provided. https://rodare.hzdr.de/record/127 10.14278/rodare.127 oai:rodare.hzdr.de:127 eng doi:10.14278/rodare.4 url:https://www.hzdr.de/publications/Publ-29250 doi:10.14278/rodare.126 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 Passive Heat Transfer Stream Condensation Heat Flux Probe Process Computed Tomography Investigations on stationary measurements at COSMEA-I facility - CT part info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:419 2024-08-14T10:41:54Z openaire_data user-rodare user-fwd user-topflow

Wiezorek, Michael Döß, Alexander Schubert, Markus Hampel, Uwe 2020-10-01 This data set contains cross-sectional averaged vapor fraction data obtained for flashing refrigerant in the horizontal feed section (inner pipe diameter of 200 mm) of the TERESA facility. The data was obtained with the Wire-mesh Sensor Framework GUI (Version 1.3.0). The archive 'void' contains .epst-files which are organized as a two column table (ASCII). The first column denotes the time step (in seconds), the second column is the cross-sectional averaged vapor fraction in percent. Allocation of the files to the operational conditions is included separate .csv-file (overview.csv), which contains 12 columns for each measurement. Here the averaged values of the .epst-files are included as well. In this study, two wire-mesh sensors were operated simultaneously. WMS1 (*_X_Sensor_1.epst) was located in an axial distance of L = 2.5 D from the flash nozzle and WMS2 (*_Y_Sensor_2.epst) was located L = 17.5 D away from the flash nozzle. https://rodare.hzdr.de/record/419 10.14278/rodare.419 oai:rodare.hzdr.de:419 url:https://www.hzdr.de/publications/Publ-31573 url:https://www.hzdr.de/publications/Publ-31636 doi:10.14278/rodare.418 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 TERESA Flashing feed Wire-mesh sensor Dataset for: Morphology of flashing feeds at critical fluid properties in larger pipes info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:143 2024-08-14T11:28:06Z 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, Diego Stannarius, Ralf 2019-08-16 The outflow of airsoft bullets from a cylindrical storage container with narrow outlet 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. airsoft bullet diameter: 6 mm, diameter of cylindrical container: 90 mm, outlet diameter: 24 mm, filling height: 80 cm, measurement heights: 10 mm, 30 mm and 50 mm above outlet https://rodare.hzdr.de/record/143 10.14278/rodare.143 oai:rodare.hzdr.de:143 eng url:https://www.hzdr.de/publications/Publ-29573 doi:10.14278/rodare.145 doi:10.1088/1367-2630/ab5893 doi:10.14278/rodare.142 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 airsoft balls info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1760 2024-08-14T10:29:52Z openaire_data openaire_data user-rodare user-topflow

Bieberle, André Schubert, Markus Zippe, Corneliusv Bieberle, André Loll, Rouven Pyka, Tobias Schubert, Markus 2022-06-27 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 zero 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/1760 10.14278/rodare.1760 oai:rodare.hzdr.de:1760 eng url:https://www.hzdr.de/publications/Publ-34856 doi:10.14278/rodare.1759 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, zero point) using GammaCT info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:272 2024-08-14T10:44:27Z openaire_data user-rodare user-topflow

Unger, Sebastian Beyer, Matthias Pietruske, Heiko Szalinski, Lutz Hampel, Uwe 2020-03-23 These are the raw data and the processed data of the journal paper "Air-side thermal and flow performance study of additively manufactred tube bundle heat exchagers with novel fin designs". The raw data contains the measured values on the experimental setup and the processed data contains the data of the data used in the corresponding journal publication. https://rodare.hzdr.de/record/272 10.14278/rodare.272 oai:rodare.hzdr.de:272 eng url:https://www.hzdr.de/publications/Publ-30840 url:https://www.hzdr.de/publications/Publ-30842 doi:10.14278/rodare.271 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 Air-side thermal and flow performance study of additively manufactred tube bundle heat exchagers with novel fin designs info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:64 2024-08-14T11:29:37Z user-fwd user-rodare user-topflow

Mohseni, Ehsan Herrmann-Heber, Robert Reinecke, Sebastian Felix Hampel, Uwe 2018-10-23 We studied the initial gas dispersion performance of diffuser concepts based on micro-orifices and needles with very fine orifice diameters in the range from 30 µm to 200 µm, as such diffusers are currently in discussion for energy-efficient wastewater treatment plants. To evaluate the performance of these micro-orifices, we compared them with industrial rubber membrane diffusers with respect to Sauter mean bubble diameter, pressure drop, frequency of bubble formation, oxygen transfer rate, and power demand for air compression. Our study revealed that, in comparison with rubber membrane diffusers bubbles generated from the micro-orifices transfer up to 82% more oxygen content into the continuous phase at up to 75% less power demand. Moreover, these micro-orifices are able to produce bubble sizes in the same range as the needle diffusers at 60% less pressure drop and 60% higher bubble generation frequency. Therefore, we also expect an improvement in the oxygen transfer coefficient KLa and standard oxygen transfer efficiency SOTE compared to commercial rubber membrane diffusers. https://rodare.hzdr.de/record/64 10.14278/rodare.64 oai:rodare.hzdr.de:64 eng url:https://www.hzdr.de/publications/Publ-28100 doi:10.14278/rodare.63 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 Bubble Generation Micro-orifices Aeration Biological Wastewater Treatment Rubber Membrane Diffusers Oxygen Transfer Bubble Generation by Micro-Orifices with Application on Activated Sludge Wastewater Treatment info:eu-repo/semantics/other other

oai:rodare.hzdr.de:190 2024-08-14T11:27:19Z openaire_data user-fwd user-rodare user-topflow

Neumann-Kipping, Martin Bieberle, Martina Wolf, Jan Schäfer, Thomas Bieberle, André Hampel, Uwe 2019-10-30 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 (FBP) sets for selected two-phase flow operating conditions at constant 1480 rpm with static and rotating impeller, respectively Corresponding quantitative gas fraction data sets (for static impeller position) Averaged gas fraction distributions Standard deviations of the gas fraction mean values Data evaluation scripts The Project was founded by the German Federal Ministry of Education and Research (BMBF) under the funding code 02NUK023B https://rodare.hzdr.de/record/190 10.14278/rodare.190 oai:rodare.hzdr.de:190 eng url:https://www.hzdr.de/publications/Publ-29455 url:https://www.hzdr.de/publications/Publ-29872 doi:10.14278/rodare.189 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 gas-liquid two-phase flow ultrafast X-ray computed tomography Hydrodynamic investigations of gas-liquid two-phase flow in centrifugal pumps - reconstructions (selected data) info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:248 2024-08-14T10:44:45Z openaire_data user-fwd user-rodare user-topflow

Mohseni, Ehsan Jose Kalayathine, Jaunty Reinecke, Sebastian Hampel, Uwe 2020-02-03 Fine gas dispersion into a liquid is requested in a number of industrial applications. One way to achieve finer gas dispersion is to downsize the openings at which the gas bubbles are generated. Accordingly, we have investigated the dynamics of bubble formation from submerged orifices ranging from 0.04 to 0.8 mm at a comprehensive range of gas flow rates for a system of air and deionized water. In this range of orifice size, we observe a different mechanism of bubble formation compared with millimeter-range orifices. We discuss the observations on the basis of temporal change of the bubble shape, bubble base expansion, and detachment criteria. At submillimeter orifices, the mechanism of bubble formation is highly influenced by the capillary pressure and the gas kinetic energy. The latter results in congregation of small bubbles in the vicinity of the orifice, even at very small gas flow rates. Moreover, we studied the evolution of individual forces applied to the surface of bubbles during their formation. We found that the formation of bubbles at submillimeter orifices cannot be described with a quasi-static force balance. Finally, we present a bubbling regime map using proper dimensionless numbers. https://rodare.hzdr.de/record/248 10.14278/rodare.248 oai:rodare.hzdr.de:248 eng doi:10.1016/j.ijmultiphaseflow.2020.103407 url:https://www.hzdr.de/publications/Publ-30717 url:https://www.hzdr.de/publications/Publ-31363 doi:10.14278/rodare.247 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 Bubble Formation Stainless Steel Orifice Bubbling Dynamics Bubbling Regime Submillimeter Orifices Dynamics of Bubble Formation at Micro-orifices under Constant Gas Flow Conditions info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1072 2025-08-07T13:30:45Z openaire_data user-rodare user-topflow

Vishwakarma, Vineet Marchini, Sara Schleicher, Eckhard Schubert, Markus Hampel, Uwe Vishwakarma, Vineet Marchini, Sara Schleicher, Eckhard Schubert, Markus Hampel, Uwe 2021-07-21 The hydrodynamic data including effective froth height, liquid holdup and tracer flow and patterns related to an operational sieve tray inside a 0.8 m diameter air-water column simulator are provided here. These data were obtained via an advanced multiplex flow profiler at several gas and liquid loadings. The generated data were examined for predicting the tray efficiency using mathematical models. For model validation, the stripping of isobutyl acetate from the aqueous solution over the tray was employed, and the liquid samples at several tray locations were analyzed via UV spectroscopy. The resulting efficiencies and related information are provided here, too. All raw data files, data processing scripts and supporting information with proper indexing and sequencing are uploaded. All these data are intended for non-commercial use only. https://rodare.hzdr.de/record/1072 10.14278/rodare.1072 oai:rodare.hzdr.de:1072 url:https://www.hzdr.de/publications/Publ-32942 url:https://www.hzdr.de/publications/Publ-35728 url:https://www.hzdr.de/publications/Publ-39118 url:https://www.hzdr.de/publications/Publ-34102 doi:10.14278/rodare.1071 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess Column tray two-phase crossflow 3D liquid holdup effective froth height tracer-response analysis tray efficiency calculations Hydrodynamic and efficiency data pertaining to an air-water column mockup (of 0.8 m internal diameter) equipped with sieve trays info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3206 2024-10-21T13:20:20Z 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/3206 10.14278/rodare.3206 oai:rodare.hzdr.de:3206 eng url:https://www.hzdr.de/publications/Publ-39768 doi:10.14278/rodare.3205 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 20 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:917 2024-08-14T10:39:29Z openaire_data user-rodare user-topflow

Mohseni, Ehsan 2021-04-07 We developed a mechanistic model for calculation of bubble volume from orifices in the range from 0.03 mm to 0.193 mm under the constant gas flow conditions in a quiescent liquid. It is known that for such small orifices, the mechanism of bubble formation is highly dependent on the gas momentum force and the liquid inertia force. Accordingly, the model incorporates these forces to calculate the bubble volume in three consecutive stages. Moreover, the model includes the influence of the bubble base expansion and bubble rising induced liquid velocity on the formation of bubbles. Eventually the model is validated with own experimental data using air and deionized water. Experimental validation of the model confirms that the maximum deviation of the model is less than 10%. https://rodare.hzdr.de/record/917 10.14278/rodare.917 oai:rodare.hzdr.de:917 doi:10.1021/acsengineeringau.1c00004 url:https://www.hzdr.de/publications/Publ-31826 url:https://www.hzdr.de/publications/Publ-32507 doi:10.14278/rodare.916 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/closedAccess Bubble formation Micro-scale orifice Mechanistic model Stainless steel orifice Force balance Data for: Bubble formation from a microscale submerged orifice- A numerical approach info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3204 2024-10-21T13:19:47Z openaire_data user-fwd user-rodare user-hzdr user-topflow user-rofex

Barthel, Frank Sprewitz, Uwe Sohr, Johanna Schubert, Markus Bieberle, André Sohr, Johanna Barthel, Frank Sprewitz, Uwe Schubert, Markus 2024-10-21 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/3204 10.14278/rodare.3204 oai:rodare.hzdr.de:3204 eng url:https://www.hzdr.de/publications/Publ-39766 doi:10.14278/rodare.3203 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 10 m³/(m²h) and various gas rates info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:2152 2024-08-14T10:28:40Z openaire_data user-fwd user-rodare user-topflow

Marchini, Sara Bieberle, André Schleicher, Eckhard Schubert, Markus Hampel, Uwe 2023-02-06 Collected data refer to gas flow modulation measurements in a D=100 mm bubble column. The axial holdup wave is determined at three axial positions using different sensing stategies (gamma-ray densitometry, differential pressure sensors, transmittance optical probes and conductivity needle probes). Average gas holdup as well as amplitude damping and phase-shift have been determined at three different gas flow rates in the homogeneous regime. A description of the experimental setup is provided in the file "Experimental_setup.pdf". An overview of the performed experiments is provided in the Excel file "DataDescription.xlsx" This work was supported by the German Research Foundation (DFG), (HA 3088/18-1). https://rodare.hzdr.de/record/2152 10.14278/rodare.2152 oai:rodare.hzdr.de:2152 eng url:https://www.hzdr.de/publications/Publ-36712 url:https://www.hzdr.de/publications/Publ-36713 url:https://codebase.helmholtz.cloud/fwdf/measurementscience/projects/gammact/GasModFlowSenStr doi:10.14278/rodare.2151 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 gas flow modulation axial dispersion coefficient bubble columns conductivity needle probes transmittance optical probes Determining the axial gas dispersion coefficient in bubble columns via gas flow modulation technique and several sensing strategies info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:3363 2025-01-06T13:44:11Z openaire_data user-hzdr user-fwd user-rodare user-rofex user-topflow

Windisch, Dominic Barthel, Frank Bieberle, André Windisch, Dominic 2025-01-06 This repository contains sequences of CT images of the two-phase flow in a bubble column consisting of a DN100-PN4 PVC pipe filled with water. 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 2,000 Hz. Data containers starting with “SingleBubble” contain image sequences of scans where a single bubble was injected at the bottom of the column using a magnetically operated valve which was open for the time specified in the directory name. Data containers starting with “PolydisperseStatic” contain image sequences of scans where a background flow with 01 to 20 sl/min was induced via a needle sparger in addition to the single bubble (as described before). During each “PolydisperseStatic” scan, the scanning position was fixed at "Hxxx" [mm]. The HDF5 files hold the reconstructed image data (dataset “reco”), each images scanning plane (dataset “plane”), and each images vertical scan position (dataset “scanPosition”). https://rodare.hzdr.de/record/3363 10.14278/rodare.3363 oai:rodare.hzdr.de:3363 eng url:https://www.hzdr.de/publications/Publ-40432 doi:10.14278/rodare.3362 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 ultrafast X-ray computed tomography bubble column Investigations on Polydisperse gas phase - Static info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:1531 2024-08-14T10:31:44Z software user-energy user-fwd user-hzdr user-rodare user-topflow

Döß, Alexander Schubert, Markus 2022-04-01 - english version below - Diese grafische Nutzeroberfläche in Form einer installirbaren standalone-Anwendung dient zur Visualisierung aus der Literatur bekannter experimenteller Datensätze und Strömungskarten für horizontal strömende Luft/Wasser-Systeme. Weiterhin sind Modelle und Strömungskarten aus der Literatur integriert, die für beliebige Stoffsysteme eine Vorhersage über die zu erwartenden Strömungsformen treffen. Zusätzlich erlauben Schnitstellen in Form von .txt-Dateien das Importieren eigener Datensätze, bzw. das Exportieren der visualisierten Inhalte. Für die Richtigkeit der dargestellten Inhalte wird keine Haftung übernommen. Das Urheberrecht für die zugrundeliegenden Datensätze und Berechnungen liegt bei den Autoren der referenzierten Primärliteratur. This graphical user interface in the form of an installable standalone application is used to visualize experimental data sets and flow maps known from the literature for horizontally flowing air/water systems. Furthermore, models and flow maps from the literature are integrated to predict the flow patterns for any fluid system. Additionally, data interfaces in the form of .txt files allow the import of own data sets, respectively the export of the visualized contents. No liability is assumed for the correctness of the displayed contents. The copyright for the underlying data sets and calculations is held by the authors of the referenced primary literature. https://rodare.hzdr.de/record/1531 10.14278/rodare.1531 oai:rodare.hzdr.de:1531 deu url:https://www.hzdr.de/publications/Publ-34503 doi:10.14278/rodare.1530 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 url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/restrictedAccess GUI Interface Flow data flow regime maps Strömungsdaten Strömungskarten GUI Flow data info:eu-repo/semantics/other software

oai:rodare.hzdr.de:50 2024-08-19T13:14:30Z openaire_data user-fwd user-rodare user-topflow

Bieberle, André Schlottke, Jan Hampel, Uwe Kühnel, Wolfram Bieberle, André Spies, Alexander Schlottke, Jan 2018-09-05 This work comprises data provided by high-resolution gamma-ray computed tomography that was applied on a viscous coupling to visualize the internal operating fluid distribution. Therefore, angle-resolved time-averaged CT scanning technique was performed at different cross-sectional positions, rotational speeds as well as at primary and secondary side. https://rodare.hzdr.de/record/50 10.14278/rodare.50 oai:rodare.hzdr.de:50 eng url:https://www.hzdr.de/publications/Publ-27884 doi:10.14278/rodare.49 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 viscous coupling gamma-ray CT process-synchronized fast imaging Hydrodynamic analysis in a viscous coupling using angle-resolved gamma-ray computed tomography info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:244 2024-08-14T10:45:00Z openaire_data user-rodare user-topflow

Timaeus, Robert Schleicher, Eckhard Bieberle, André Hampel, Uwe Schubert, Markus 2020-02-03 The hydrodynamic raw data of an inclined rotating fixed-bed reactor with different inner tubes are given. The phase distributions of nitrogen and cumene in the cross-section of the reactor filled with porous alumina particles were measured via a capacitance wire-mesh sensor. Besides, the the raw data of the specific pressure drops for the investigated operating points are described. Additionally, the attenuation coefficients of different configurations (different particle and inner tube diameter) are collected, which were measured by gamma-ray computed tomography. This publication contains the raw data of the publication "Hydrodynamic data of an inclined rotating fixed-bed reactor" (10.14278/rodare.203). https://rodare.hzdr.de/record/244 10.14278/rodare.244 oai:rodare.hzdr.de:244 eng doi:10.1016/j.ces.2020.115637 doi:10.14278/rodare.203 url:https://www.hzdr.de/publications/Publ-30121 url:https://www.hzdr.de/publications/Publ-30694 doi:10.14278/rodare.243 url:https://rodare.hzdr.de/communities/rodare url:https://rodare.hzdr.de/communities/topflow info:eu-repo/semantics/closedAccess Hydrodynamic analysis Wire-mesh sensor Raw data Gamma-ray computed tomography Raw data of liquid saturation, pressure drop and porosity of an inclined rotating fixed-bed reactor with inner tube info:eu-repo/semantics/other dataset

oai:rodare.hzdr.de:140 2024-08-14T11:27:03Z 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 L32 that uses a ring-shaped 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/140 10.14278/rodare.140 oai:rodare.hzdr.de:140 eng doi:10.14278/rodare.124 doi:10.14278/rodare.197 doi:10.14278/rodare.122 doi:10.14278/rodare.137 doi:10.14278/rodare.195 url:https://www.hzdr.de/publications/Publ-29882 doi:10.14278/rodare.139 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 ring-shaped constriction info:eu-repo/semantics/other dataset