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-   -   Problem with simpleFoam (http://www.cfd-online.com/Forums/openfoam-pre-processing/62041-problem-simplefoam.html)

sivakumar September 4, 2008 04:50

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:http://www.cfd-online.com/OpenFOAM_D...part/proud.gifstream&) 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/libc.so.6"
#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 ume.so"
#9 main in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/applications/bin/linux64GccDPOpt /simpleFoam"
#10 __libc_start_main in "/lib64/libc.so.6"
#11 Foam::regIOobject::readIfModified() in "/home/junkers/selv_si/OpenFOAM1.5/OpenFOAM-1.5/applications/bin/linux64GccDPOpt /simpleFoam"
Flie▀kommafehler
junkers-selv_si:~/OpenFOAM1.5/selv_si-1.5/run/tutorials/simpleFoam/kabine_withp/ kabine_p_KEpsilon 22:45 >


control

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,
sivakumar

fra76 September 4, 2008 14:48

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

sivakumar September 5, 2008 04:06

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


with regards,
sivakumar

fra76 September 5, 2008 14:09

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 12:01

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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