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sivakumar September 4, 2008 03:50

hi guys, i am getti
hi guys,
i am getting this problem often for simple Foam as well as turbFoam.

the message is

Time = 243

DILUPBiCG: Solving for Ux, Initial residual = 0.0921126, Final residual = 0.00118057, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.0227887, Final residual = 0.000450739, No Iterations 1
DILUPBiCG: Solving for Uz, Initial residual = 0.0322668, Final residual = 0.000457125, No Iterations 1
#0 Foam::error::printStack(Foam: in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM. so"
#1 Foam::sigFpe::sigFpeHandler(int) in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM. so"
#2 ?? in "/lib64/"
#3 Foam::DICPreconditioner::calcReciprocalD(Foam::Fie ld<double>&, Foam::lduMatrix const&) in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM. so"
#4 Foam::DICPreconditioner::DICPreconditioner(Foam::l duMatrix::solver const&, Foam::Istream&) in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM. so"
#5 Foam::lduMatrix::preconditioner::addsymMatrixConst ructorToTable<foam::dicprecond itioner>::New(Foam::lduMatrix::solver const&, Foam::Istream&) in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM. so"
#6 Foam::lduMatrix::preconditioner::New(Foam::lduMatr ix::solver const&, Foam::Istream&) in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM. so"
#7 Foam::PCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM. so"
#8 Foam::fvMatrix<double>::solve(Foam::Istream&) in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/lib/linux64GccDPOpt/libfiniteVol"
#9 main in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/applications/bin/linux64GccDPOpt /simpleFoam"
#10 __libc_start_main in "/lib64/"
#11 Foam::regIOobject::readIfModified() in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/applications/bin/linux64GccDPOpt /simpleFoam"
junkers-selv_si:~/OpenFOAM1.5/selv_si-1.5/run/tutorials/simpleFoam/kabine_withp/ kabine_p_KEpsilon 22:45 >


application simpleFoam;

startFrom startTime;

startTime 0;

stopAt endTime;

endTime 1000;

deltaT 1;

writeControl timeStep;

writeInterval 50;

purgeWrite 0;

writeFormat ascii;

writePrecision 6;

writeCompression uncompressed;

timeFormat general;

timePrecision 6;

runTimeModifiable yes;

please help me to rectify this problem.

with regards,

fra76 September 4, 2008 13:48

Simply, your simulation diverg
Simply, your simulation diverges, I'm afraid...

sivakumar September 5, 2008 03:06

hello, how can i solv
how can i solve this problem?

with regards,

fra76 September 5, 2008 13:09

You should play with your nume
You should play with your numerical schemes and/or improve the quality of your mesh.
Try to post here the output of checkMesh and your fvSchemes and fvSolution files. Maybe someone can suggest you some improvement...

ameya September 6, 2008 11:01

Try manipulating internal Fiel
Try manipulating internal Field values. My experience with OpenFOAM tells me that the codes are very sensitive to initial values.

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