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February 20, 2014, 07:05 |
maximum number of iterations exceede
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#1 |
New Member
Amir A
Join Date: Feb 2014
Posts: 5
Rep Power: 12 |
hi
i'm trying to solve an openfoam 1.6 case with openfoam 2.1.0.i have been changed every file of this case to compatible with version 2.1.0...finally i could run, but this error appears: --> FOAM FATAL ERROR: Maximum number of iterations exceeded From function specieThermo<Thermo>::T(scalar f, scalar T0, scalar (specieThermo<Thermo>::*F)(const scalar) const, scalar (specieThermo<Thermo>::*dFdT)(const scalar) const) const in file /home/opencfd/OpenFOAM/OpenFOAM-2.1.0/src/thermophysicalModels/specie/lnInclude/specieThermoI.H at line 69. this is the original fvsolution file in version 1.6: solvers { rho ICCG 1e-06 0; U BICCG 1e-06 0; p ICCG 1e-09 0; Yi BICCG 1e-06 0; h BICCG 1e-06 0; k BICCG 1e-06 0; epsilon BICCG 1e-06 0; } PISO { nCorrectors 2; nNonOrthogonalCorrectors 0; } and this is the fvsolution file that i changed it: solvers { rho ICCG 1e-06 0; U { solver PBiCG; preconditioner DILU; tolerance 1e-06; relTol 0; } p ICCG 1e-09 0; Yi BICCG 1e-06 0; h BICCG 1e-06 0; k BICCG 1e-06 0; epsilon BICCG 1e-06 0; UFinal { $U; } } PIMPLE { nCorrectors 2; nNonOrthogonalCorrectors 0; } how can i fix it? thank u all |
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February 21, 2014, 05:54 |
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#2 |
Senior Member
Philipp
Join Date: Jun 2011
Location: Germany
Posts: 1,297
Rep Power: 26 |
Your file looks strange. This is how I use PIMPLE:
Code:
/*--------------------------------*- C++ -*----------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.2.1 | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ FoamFile { version 2.0; format ascii; class dictionary; object fvSolution; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // solvers { p { solver GAMG; tolerance 1e-6; relTol 1.0e-1; maxIter 100; smoother DICGaussSeidel; nPreSweeps 0; nPostSweeps 1; nFinestSweeps 2; cacheAgglomeration true; nCellsInCoarsestLevel 50;//10; agglomerator faceAreaPair; mergeLevels 1; }; pFinal { solver GAMG; tolerance 1e-6; relTol 1.0e-2; maxIter 100; smoother DICGaussSeidel; nPreSweeps 0; nPostSweeps 1; nFinestSweeps 2; cacheAgglomeration true; nCellsInCoarsestLevel 50;//10; agglomerator faceAreaPair; mergeLevels 1; }; U { solver PBiCG; preconditioner DILU; tolerance 1e-08; relTol 1.0e-1; maxIter 100; }; UFinal { solver PBiCG; preconditioner DILU; tolerance 1e-08; relTol 1.0e-2; maxIter 100; }; k { solver PBiCG; preconditioner DILU; tolerance 1e-08; relTol 1.0e-1; maxIter 100; }; kFinal { solver PBiCG; preconditioner DILU; tolerance 1e-08; relTol 1.0e-2; maxIter 100; }; omega { solver PBiCG; preconditioner DILU; tolerance 1e-08; relTol 1.0e-1; maxIter 100; }; omegaFinal { solver PBiCG; preconditioner DILU; tolerance 1e-08; relTol 1.0e-2; maxIter 100; }; } PISO { nCorrectors 1; nNonOrthogonalCorrectors 1; } SIMPLE { nNonOrthogonalCorrectors 1; residualControl { p 1e-5; U 1e-5; k 1e-5; omega 1e-5; } } PIMPLE { nOuterCorrectors 15; nCorrectors 1; nNonOrthogonalCorrectors 2; pRefCell 0; pRefValue 0; turbOnFinalIterOnly false; residualControl { p { relTol 1.0e-3; tolerance 1.0e-3; } U { relTol 1.0e-3; tolerance 1.0e-3; } k { relTol 1e-3; tolerance 1.0e-3; } omega { relTol 1e-3; tolerance 1.0e-3; } } } potentialFlow { nNonOrthogonalCorrectors 10; } relaxationFactors { fields { "p.*" 0.3; "nuSgs.*" 0.5; } equations { "U.*" 0.8; "k.*" 0.5; "omega.*" 0.5; } }
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