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<li><a class="reference internal" href="#">cfdemSolverIB command</a><ul>
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<li><a class="reference internal" href="#description">Description</a></li>
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<div class="section" id="cfdemsolverib-command">
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<span id="index-0"></span><h1>cfdemSolverIB command<a class="headerlink" href="#cfdemsolverib-command" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="description">
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<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
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<p>“cfdemSolverIB” is a coupled CFD-DEM solver using CFDEMcoupling, an open source parallel coupled CFD-DEM framework, for calculating
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the dynamics between immersed bodies and the surrounding fluid. Being an implementation of an immersed boundary method it allows tackling problems where the body diameter exceeds the maximal size of a fluid cell. Using the toolbox of OpenFOAM®(*) the governing equations of the fluid are computed and the corrections of velocity and pressure field with respect to the body-movement information, gained from LIGGGHTS, are incorporated.</p>
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<p>Code of this solver contributions by Alice Hager, JKU.</p>
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<p><strong>Algorithm:</strong></p>
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<p>For each time step ...</p>
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<ul class="simple">
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<li>the motion of the spheres is calculated (position, velocity, angular velocity, force...) with LIGGGHTS using the velocity and pressure-field from the previous time step (initial condition for t=0).</li>
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<li>the Navier-Stokes equations are solved on the whole computational domain, disregarding the solid phase.</li>
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<li>the spheres are located within the mesh: each sphere is represented by a cluster of cells, which are either totally or partially covered by the body, depending on its exact position.</li>
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<li>the correction of the velocity and pressure field of the fluid phase takes place, using the information about the location of the spheres and their (angular) velocity.</li>
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</ul>
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<p><strong>Use:</strong></p>
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<p>The solver is realized within the Open Source framework CFDEMcoupling. Just as for the unresolved CFD-DEM solver cfdemSolverPiso the file CFD/constant/couplingProperties contains information about the settings for the different models. While IOmodel, DataExchangeModel etc. are applicable for all CFDEMcoupling-solvers, special locate-, force- and void fraction models were designed for the present case:</p>
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<p><a class="reference internal" href="locateModel_engineSearchIB.html"><em>engineSearchIB</em></a>, <a class="reference internal" href="forceModel_ArchimedesIB.html"><em>ArchimedesIB</em></a>, <a class="reference internal" href="forceModel_ShirgaonkarIB.html"><em>ShirgaonkarIB</em></a>, <a class="reference internal" href="voidFractionModel_IBVoidFraction.html"><em>IBVoidfraction</em></a></p>
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<p><strong>References:</strong></p>
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<p>GONIVA, C., KLOSS, C., HAGER,A., WIERINK, G. and PIRKER, S. (2011): “A MULTI-PURPOSE OPEN SOURCE CFD-DEM APPROACH”, Proc. of the 8th Int. Conf. on CFD in Oil and Gas, Metallurgical and Process Industries, Trondheim, Norway</p>
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<p>and</p>
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<p>HAGER, A., KLOSS, C. and GONIVA, C. (2011): “TOWARDS AN EFFICIENT IMMERSED BOUNDARY METHOD WITHIN AN OPEN SOURCE FRAMEWORK”, Proc. of the 8th Int. Conf. on CFD in Oil and Gas, Metallurgical and Process Industries, Trondheim, Norway</p>
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<hr class="docutils" />
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<p>(*) This offering is not approved or endorsed by OpenCFD Limited, the producer of the OpenFOAM software and owner of the OPENFOAM® and OpenCFD® trade marks.</p>
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