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September 4, 2008, 03:50 |
hi guys,
i am getti
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#1 |
Senior Member
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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:stream&) 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" Fließkommafehler 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 |
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September 4, 2008, 13:48 |
Simply, your simulation diverg
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#2 |
Senior Member
Francesco Del Citto
Join Date: Mar 2009
Location: Zürich Area, Switzerland
Posts: 237
Rep Power: 18 |
Simply, your simulation diverges, I'm afraid...
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September 5, 2008, 03:06 |
hello,
how can i solv
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#3 |
Senior Member
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hello,
how can i solve this problem? with regards, sivakumar |
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September 5, 2008, 13:09 |
You should play with your nume
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#4 |
Senior Member
Francesco Del Citto
Join Date: Mar 2009
Location: Zürich Area, Switzerland
Posts: 237
Rep Power: 18 |
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... |
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September 6, 2008, 11:01 |
Try manipulating internal Fiel
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#5 |
New Member
Ameya Durve
Join Date: Mar 2009
Location: Mumbai, Maharashtra, India
Posts: 20
Rep Power: 17 |
Try manipulating internal Field values. My experience with OpenFOAM tells me that the codes are very sensitive to initial values.
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