anyone tried rhoPorousMRFSimpleFoam in OF 2.0.0?
Hello Foamers,
I am using rhoPorousMRFSimpleFoam for compressor simulation. the mesh is came from starccm+ and checkMesh is ok. Then these are my boundary conditions. I am starting with very slow rotational velocity, i.e. w=1 rad/sec. for p inlet-zeroGradient, outlet-fixedValue, $internalField wall-zeroGradient internalField uniform 2e5; for U inlet-fixedValue, uniform (150 0 0) outlet-zeroGradient, wall-fixedValue, uniform (0 0 0) internalField uniform (1 10 10) for T inlet-totalTemperature, T0 uniform 300, gamma 1.4 outlet-inletOutlet, value $internalField, inletValue $internalField wall-zeroGradient, internalField uniform 298; for mut inlet-calculated uniform 0, outlet-calculated uniform 0, wall-mutkWallFunction uniform 0, internalField uniform 0.018; for k inlet-fixedValue, uniform 70 outlet-zeroGradient wall-compressible: :kqRWallFunction uniform 7, internalField uniform 7; for epsilon inlet-fixedValue, uniform 19222.91 outlet-zeroGradient wall-compressible: :epsilonWallFunction uniform 1922.291, internalField uniform 7; for alphat inlet-calculated uniform 0, outlet-calculated uniform 0, wall-alphatWallFunction uniform 0, internalField uniform 0; my relaxation factors from fvSolution files are p 0.1; rho 1; // I changed this to 0.5 then it ran for about 3500 iterations and then diverges because of thermal properties error message. U 0.3; "(k|epsilon)" 0.5; h 0.5; and rhomax - 1.9 rhomin - 0.6 and thermoType hPsiThermo<pureMixture<constTransport<specieThermo <hConstThermo<perfectGas>>>>>; mixture { specie { nMoles 1; molWeight 28.9; } thermodynamics { Cp 1007; Hf 2.544e+06; } transport { mu 0.1835e-04; Pr 0.72; } } and I am getting this error after 200 iterations. --> 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 (s pecieThermo<Thermo>::*dFdT)(const scalar) const) const in file /opt/software/OpenFOAM/OpenFOAM-2.0.x/src/thermophysicalModels/specie/lnInclude/specieThermoI.H at line 67. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) in "/share/openfoam/2.0/OpenFOAM/platforms/linux64Gcc45DPOpt/lib/libOpenFOAM.so" #1 Foam::error::abort() in "/share/openfoam/2.0/OpenFOAM/platforms/linux64Gcc45DPOpt/lib/libOpenFOAM.so" #2 Foam::hPsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::ca lculate() in "/share/openfoam/2.0/OpenFOAM/platforms/linux64Gcc45DPOpt/lib/libbasicThermophysicalModels.so" #3 Foam::hPsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::co rrect() in "/share/openfoam/2.0/OpenFOAM/platforms/linux64Gcc45DPOpt/lib/libbasicThermophysicalModels.so" #4 main in "/share/openfoam/2.0/OpenFOAM/platforms/linux64Gcc45DPOpt/bin/rhoPorousMRFSimpleFoam" #5 __libc_start_main in "/lib64/libc.so.6" #6 Foam::UOPstream::write(char) in "/share/openfoam/2.0/OpenFOAM/platforms/linux64Gcc45DPOpt/bin/rhoPorousMRFSimpleFoam" Abort Please tell me where I am going wrong. Is anybody using rhoPorousMRFSimpleFoam? Regards Suhas |
Hello Foamers,
Anybody did simulation of compressor using compressible solver of openfoam (main versions)? I am using OF 2.0.0 and rhoPorousMRFSimpleFoam solver, but I need help to run the simulation. If anyone has any expirience with this, please give some suggestions... The simulation is running but there is no pressure increament. why? Thank you. |
Hi,
I know this is very late but did you solve your problem. The issue can be with the porosity treatment. I had a similar problem when I was using explicit porosity treatment for high resistance porous region. Changing it to imnkplicit did the trick. Kalyan |
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