Flow around a heated cylinder
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Hi Foamers,
I have to run a case of a flow past a heated cylinder with rhoPisoFoam. The air temperature is 300K and the wall temperature is 340K. The velocity is 1 m/s. After some iterations (less than 10) I have an error: Time = 0.09132 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 DILUPBiCG: Solving for Ux, Initial residual = 0.996377, Final residual = 9.70033e-06, No Iterations 269 DILUPBiCG: Solving for Uy, Initial residual = 0.997456, Final residual = 8.79396e-06, No Iterations 277 DILUPBiCG: Solving for h, Initial residual = 0.948008, Final residual = 8.83847e-06, No Iterations 847 --> 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-1.7.0/src/thermophysicalModels/specie/lnInclude/specieThermoI.H at line 67. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) in "/opt/openfoam170/lib/linuxGccDPOpt/libOpenFOAM.so" #1 Foam::error::abort() in "/opt/openfoam170/lib/linuxGccDPOpt/libOpenFOAM.so" #2 Foam::hPsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::calculate() in "/opt/openfoam170/lib/linuxGccDPOpt/libbasicThermophysicalModels.so" #3 Foam::hPsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::correct() in "/opt/openfoam170/lib/linuxGccDPOpt/libbasicThermophysicalModels.so" #4 in "/opt/openfoam170/applications/bin/linuxGccDPOpt/rhoPisoFoam" #5 __libc_start_main in "/lib/tls/i686/cmov/libc.so.6" #6 in "/opt/openfoam170/applications/bin/linuxGccDPOpt/rhoPisoFoam" Abandon I think I have a problem with my BC. Can you help me? Please find enclosed my case. Thanks in advance. Cynthia. |
Maybe try changing adjustTimeStep no;, into adjustTimeStep yes; so as it adjusts the timestep according to the maximum Courant number you set.
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Thanks a lot thekay.
I have decreased my courant number and it works well! |
which turbulence model are you using and what are your BC's?
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