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[isoAdvector] Different results with polyhedral and hexahedral mesh |
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October 21, 2020, 08:31 |
[isoAdvector] Different results with polyhedral and hexahedral mesh
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New Member
Liz
Join Date: Apr 2020
Location: Germany
Posts: 10
Rep Power: 6 |
Hello eveybody,
I'm using compressibleInterIsoFoam (OF v2006) for a nozzle spray simulation and I'm comparing the results between polyMesh and hexaMesh. For both cases I have defined the same conditions and the results are really different (see attached file). Any idea why is this happening? I'm grateful for any help! Cheers, Liz PS: Inlet condition: nozzle bottom 4,6 g/s outlet condition: outlet box 1 bar fvSolution Code:
solvers { "alpha.oil.*" { nAlphaCorr 1; nAlphaSubCycles 3; cAlpha 1; reconstructionScheme plicRDF; vof2IsoTol 1e-8; surfCellTol 1e-6; nAlphaBounds 3; snapTol 1e-12; clip true; } "pcorr.*" { solver PCG; preconditioner DIC; tolerance 1e-7; relTol 0.01; } ".*(rho|rhoFinal)" { solver diagonal; } p_rgh { solver PCG; preconditioner DIC; tolerance 1e-8; relTol 0.01; } p_rghFinal { $p_rgh; relTol 0; } "(U|T|k|epsilon|B).*" { solver smoothSolver; smoother symGaussSeidel; tolerance 1e-08; relTol 0; } } PIMPLE { momentumPredictor no; nOuterCorrectors 1; nCorrectors 3; nNonOrthogonalCorrectors 0; } relaxationFactors { fields { "p.*" 0.1; } equations { "k.*" 0.7; "epsilon.*" 0.7; "U.*" 0.8; } } Code:
ddtSchemes { default Euler; } gradSchemes { default Gauss linear; } divSchemes { div(rhoPhi,U) Gauss upwind; div(phi,alpha) Gauss vanLeer; div(phirb,alpha) Gauss interfaceCompression; div(phi,thermo:rho.oil) Gauss upwind; div(phi,thermo:rho.air) Gauss upwind; div(phi,k) Gauss upwind; div(rhoPhi,k) Gauss upwind; div(phi,epsilon) Gauss upwind; div(rhoPhi,epsilon) Gauss upwind; div(rhoPhi,T) Gauss upwind; div(rhoPhi,K) Gauss upwind; div(phi,p) Gauss upwind; div(((rho*nuEff)*dev2(T(grad(U))))) Gauss linear; } laplacianSchemes { default Gauss linear corrected; } interpolationSchemes { default linear; } snGradSchemes { default corrected; } Last edited by redTo; October 21, 2020 at 09:41. |
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