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-   -   rhoSimpleFoam (http://www.cfd-online.com/Forums/openfoam/80590-rhosimplefoam.html)

green September 30, 2010 06:34

rhoSimpleFoam
 
Hello

i wanted to start a case with openSimpleFoam of channel (30m/s and 293K) with secondary inlet (70m/s and 348K), but something is wrong because after a first iteration the density is far from realistic value (rho max/min : 7.62292 -65.1773) and then after third iterations i get an error:

Maximum number of iterations exceeded#0 Foam::error::printStack(Foam::Ostream&) in "/home/user/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/home/user/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libOpenFOAM.so"
#2 Foam::hPsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::calculate() in "/home/user/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libbasicThermophysicalModels.so"
#3 Foam::hPsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::correct() in "/home/user/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libbasicThermophysicalModels.so"
#4 main in "/home/user/OpenFOAM/OpenFOAM-1.6/applications/bin/linuxGccDPOpt/rhoSimpleFoam"
#5 __libc_start_main in "/lib/libc.so.6"
#6 _start at /usr/src/packages/BUILD/glibc-2.9/csu/../sysdeps/i386/elf/start.S:122


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/dm2/henry/OpenFOAM/OpenFOAM-1.6/src/thermophysicalModels/specie/lnInclude/specieThermoI.H at line 68.

FOAM aborting


Could it bee something the the path (red collor) is not existing on my computer?

Any suggestions?

Thanks

T.D. October 1, 2010 11:32

deltaT
 
hi
did you tried to decrease your deltaT

green October 1, 2010 11:56

rhoSimpleFoam to rhoPisoFoam
 
i tried also with smaller deltaT and I figured also that i have to correct the epsilon boundary and initial values but the solution with rhoSimpleFoam doesnt work it stops with same error but after 6 iteration instead of 4.

I solved the problem with use of rhoPisoFoam solver.

Thanks for your reply


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