Software Open Access
Schlegel, Fabian;
Draw, Mazen;
Evdokimov, Ilya;
Hänsch, Susann;
Khan, Harris;
Lehnigk, Ronald;
Meller, Richard;
Petelin, Gašper;
Tekavčič, Matej
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<subfield code="a">Schlegel, Fabian</subfield>
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<subfield code="x">Meller, R., Schlegel, F., & Lucas, D. (2020). Basic verification of a numerical framework applied to a morphology adaptive multifield two‐fluid model considering bubble motions. International Journal for Numerical Methods in Fluids.</subfield>
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<subfield code="a"><p>The HZDR multiphase addon contains additional code for the open-source CFD software OpenFOAM, released by <a href="\">The OpenFOAM Foundation</a>. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method). Within the OpenFOAM library the multiphaseEulerFoam framework is used for this type of simulation. The addon contains a modified multiphaseEulerFoam named <em>HZDRmultiphaseEulerFoam</em> with the full support of the HZDR baseline model set for polydisperse bubbly flows according to Liao et al. (<a href="\">Chem Eng Sci, 2019, Vol. 202, 55-69</a>). In addition a solver dedicated to a hybrid modelling approach (dispersed and resolved interfaces, Meller et al., <a href="\">Int J Numer Meth Fluids. 2020, 1-26</a>) named <em>cipsaMultiphaseEulerFoam</em> is provided with the addon. This solver has an interface to the multiphaseEulerFoam framework and utilizes all available interfacial models of it.</p>
<p><strong>General enhancements</strong></p>
<ul>
<li>modified turbulent wall functions of Menter according to Rzehak and Kriebitzsch (<a href="\">Int J Multiphase Flow, 2015, Vol. 68, 135-152</a>)</li>
<li>dynamic time step adjustment via PID controller</li>
</ul>
<p><strong>HZDRmultiphaseEulerFoam</strong></p>
<ul>
<li>bubble induced turbulence model of Ma et al. (<a href="\">Phys Rev Fluids, 2017, Vol. 2, 034301</a>)</li>
<li>drag model of Ishii and Zuber (<a href="\">AIChE Journal, 1979, Vol. 25, 843-855</a>) without correction for swarm and/or viscous effects</li>
<li>wall lubrication of Hosokawa et al. (<a href="\">ASME Joint US-European Fluids Engineering Division Conference, 2002</a>)</li>
<li>additional breakup and coalescence models for class method according to Liao et al. (<a href="\">Chem Eng Sci, 2015, Vol. 122, 336-349</a>)</li>
<li>degassing boundary condition (fvOption)</li>
<li>configuration files and tutorials for easy setup</li>
</ul>
<p><strong>cipsaMultiphaseEulerFoam</strong></p>
<ul>
<li>morphology adaptive modeling framework for modelling of dispersed and resolved interfaces based on Eulerian multi-field two-fluid model</li>
<li>compact interpolation method according to Cubero et al. (<a href="\">Comput Chem Eng, 2014, Vol. 62, 96-107</a>), including virtual mass</li>
<li>numerical drag according to Strubelj and Tiselj (<a href="\">Int J Numer Methods Eng, 2011, Vol. 85, 575-590</a>) to describe resolved interfaces in a volume-of-fluid like manner</li>
<li>n-phase partial elimination algorithm for momentum equations to resolve strong phase coupling</li>
<li>free surface turbulence damping for k-&omega; SST (symmetric and asymmetric damping, Frederix et al., <a href="\"> Nucl Eng Des, 2018, Vol. 333, 122-130</a>)</li>
<li>selected tutorial cases:
<ul>
<li>a two-dimensional gas bubble, rising in a liquid, which is laden with micro gas bubbles, and</li>
<li>a two-dimensional stagnant stratification of water and oil, sharing a large-scale interface</li>
<li>a two-dimensional stratified flow based on the WENKA experiment (St&auml;bler, <a href="\">Ph.D. thesis, 2007</a>)</li>
</ul>
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<subfield code="a">Lehnigk, Ronald</subfield>
<subfield code="u">Department of Computational Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Germany</subfield>
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<subfield code="a">Meller, Richard</subfield>
<subfield code="u">Department of Computational Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Germany</subfield>
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<subfield code="a">Petelin, Gašper</subfield>
<subfield code="u">Computer Systems Department, Jožef Stefan Institute, Slovenia</subfield>
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<subfield code="a">Tekavčič, Matej</subfield>
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<subfield code="a">This work was supported by the Helmholtz European Partnering Program in the project "Crossing borders and scales (Crossing)"</subfield>
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| Unique downloads | 5,896 | 130 |