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November 10, 2015, 12:46 |
Unstable solution with blueSolver
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#1 |
Member
Mike Lob
Join Date: Oct 2015
Location: It
Posts: 51
Rep Power: 11 |
Hi everyone!
I'm simulating a VAWT Darrieus Turbine using blueSolver. Following the tutorials everythings seems to be fine, but after starting the case, something goes wrong. Even if I'm using the std solutors of the case. fvSolution Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.3.x | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | |*---------------------------------------------------------------------------*| | File created by CFD support s.r.o., Wed Oct 22 11:35:02 2014 | | http://www.cdfsupport.com | \*---------------------------------------------------------------------------*/ FoamFile { version 2.3; format ascii; class dictionary; location "system"; object fvSolution; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // solvers { p { solver GAMG; tolerance 1e-8; relTol 0.001; smoother GaussSeidel; cacheAgglomeration true; nCellsInCoarsestLevel 20; agglomerator faceAreaPair; mergeLevels 1; } U { solver smoothSolver; smoother GaussSeidel; nSweeps 2; tolerance 1e-20; relTol 0.1; } k { solver smoothSolver; smoother GaussSeidel; nSweeps 2; tolerance 1e-20; relTol 0.1; } "(omega|epsilon)" { solver smoothSolver; smoother GaussSeidel; nSweeps 2; tolerance 1e-20; relTol 0.1; } } SIMPLE { nNonOrthogonalCorrectors 0; numberIterationsStator 1; numberIterationsRotor 1; UMax 500; pMin pMin [0 2 -2 0 0 0 0] -1000; pMax pMax [0 2 -2 0 0 0 0] 1000; } relaxationFactors { fields { p 0.3; } equations { U 0.7; k 0.3; epsilon 0.3; omega 0.3; } } // ************************************************************************* // Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.1.x | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; location "system"; object fvSchemes; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // ddtSchemes { default steadyState; } gradSchemes { default Gauss linear; } divSchemes { default none; div(phi,U) bounded Gauss limitedLinearV 1.0;//Gauss linearUpwindV grad(U); div(phi,k) bounded Gauss upwind; div(phi,omega) bounded Gauss upwind; div(phi,epsilon) bounded Gauss upwind; div((nuEff*dev(T(grad(U))))) Gauss linear; } laplacianSchemes { default Gauss linear corrected; } interpolationSchemes { default linear; } snGradSchemes { default corrected; } fluxRequired { default no; p ; } // ************************************************************************* // |
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Tags |
bluesolver, simple algorithm, steadystate |
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