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https://github.com/ParticulateFlow/CFDEMcoupling-PFM.git
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9fd4f62f21
This 2D case of vortex shedding in laminar cross-flow demonstrates the concept of recurrence. This is a bit work-in-progress: please check whether this tutorial runs with the recurrence model and tools of CFDEMcoupling, namely rStatAnalysis. The simulation roughly goes through three stages: * The initial solution computed by potentialFoam * A period of symmetric, steady-state flow * Finally, periodic vortex shedding These three stages are clearly visible in the recurrence plot. * We see how not one of the later velocity fields is similar to the initial one * We see the intermediate stage with a symmetric flow field * We see the periodic vortex shedding
106 lines
2.2 KiB
C++
106 lines
2.2 KiB
C++
/*--------------------------------*- C++ -*----------------------------------*\
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| ========= | |
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| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
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| \\ / O peration | Version: 2.3.0 |
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| \\ / A nd | Web: www.OpenFOAM.org |
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| \\/ M anipulation | |
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\*---------------------------------------------------------------------------*/
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FoamFile
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{
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version 2.0;
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format ascii;
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class dictionary;
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location "system";
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object fvSolution;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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solvers
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{
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p
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{
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solver GAMG;
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tolerance 1e-08;
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relTol 0.0001;
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maxIter 100;
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smoother DIC;
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nPreSweeps 1;
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nPostSweeps 2;
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nFinestSweeps 2;
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scaleCorrection true;
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directSolveCoarsestLevel false;
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cacheAgglomeration true;
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nCellsInCoarsestLevel 330;
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agglomerator faceAreaPair;
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mergeLevels 1;
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}
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pFinal
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{
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$p;
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relTol 0;
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}
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U
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{
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solver PBiCG;
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preconditioner DILU;
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tolerance 1e-08;
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relTol 0.001;
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}
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/*U
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{
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type coupled;
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solver PBiCICG;
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preconditioner DILU;
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tolerance (1e-08 1e-08 1e-08);
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relTol (0 0 0);
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}*/
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UFinal
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{
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$U;
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}
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Phi
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{
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solver PCG;
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preconditioner DIC;
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tolerance 1e-08;
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relTol 0.001;
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}
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}
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PIMPLE
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{
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nOuterCorrectors 10;
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nCorrectors 1;
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nNonOrthogonalCorrectors 1;
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residualControl
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{
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U
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{
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relTol 0;
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tolerance 0.00001;
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}
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}
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}
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relaxationFactors
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{
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/*equations
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{
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p 0.4;
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U 0.6;
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}*/
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}
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potentialFlow
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{
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nNonOrthogonalCorrectors 20;
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}
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// ************************************************************************* //
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