633fee4f84
With the SIMPLE "consistent" option and optimized relaxation factors this tutorial now converges in 210 iterations, previously with SIMPLE it took 950. Despite the increase in cost per time-step due to the increase in relaxation factors and number of solver iterations the speed-up is 3.5x.
66 lines
1.7 KiB
C++
66 lines
1.7 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: dev |
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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-06;
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relTol 0.1;
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smoother GaussSeidel;
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nPreSweeps 0;
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nPostSweeps 2;
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cacheAgglomeration on;
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agglomerator faceAreaPair;
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nCellsInCoarsestLevel 10;
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mergeLevels 1;
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}
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"(U|k|epsilon|omega|f|v2)"
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{
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solver smoothSolver;
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smoother symGaussSeidel;
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tolerance 1e-05;
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relTol 0.1;
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}
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}
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SIMPLE
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{
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nNonOrthogonalCorrectors 0;
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consistent yes;
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residualControl
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{
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p 1e-2;
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U 1e-3;
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"(k|epsilon|omega|f|v2)" 1e-3;
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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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U 0.95;
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".*" 0.95;
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}
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}
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// ************************************************************************* //
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