| tH3f0rC3 |
April 6, 2011 08:29 |
Hi maddalena,
"try lowering the tolerances of the linear solvers. Something in the order of 1e-12 might be appropriate."
Can you tell me where i can lower the tolerance? Is it in the fvSolution?
When I change in fvSolution the solver crashes (at time step 20) even earlier as before (time step 27).
Here is the error message:
Code:
Time = 18
DILUPBiCG: Solving for Ux, Initial residual = 0.311333, Final residual = 0.0143 016, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.184059, Final residual = 0.0120 39, No Iterations 1
DILUPBiCG: Solving for Uz, Initial residual = 0.282154, Final residual = 0.0103 257, No Iterations 1
DICPCG: Solving for p, Initial residual = 0.699041, Final residual = 0.0292449, No Iterations 10
time step continuity errors : sum local = 6.17123e+12, global = -4.29599e+11, cu mulative = -1.38856e+12
DILUPBiCG: Solving for epsilon, Initial residual = 0.0355234, Final residual = 0.00232541, No Iterations 1
bounding epsilon, min: -1.20957e+34 max: 2.38968e+38 average: 9.01526e+33
DILUPBiCG: Solving for k, Initial residual = 0.249567, Final residual = 0.01152 8, No Iterations 1
bounding k, min: -9.14125e+25 max: 6.68445e+29 average: 6.57551e+26
ExecutionTime = 83 s ClockTime = 84 s
Time = 19
DILUPBiCG: Solving for Ux, Initial residual = 0.956852, Final residual = 0.0501 376, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.99477, Final residual = 0.01063 42, No Iterations 2
DILUPBiCG: Solving for Uz, Initial residual = 0.957249, Final residual = 0.0912 169, No Iterations 1
DICPCG: Solving for p, Initial residual = 0.965656, Final residual = 0.0432162, No Iterations 2
time step continuity errors : sum local = 5.79332e+53, global = 2.72507e+50, cum ulative = 2.72507e+50
DILUPBiCG: Solving for epsilon, Initial residual = 1, Final residual = 0.005137 37, No Iterations 46
DILUPBiCG: Solving for k, Initial residual = 2.50403e-13, Final residual = 2.50 403e-13, No Iterations 0
ExecutionTime = 87.22 s ClockTime = 89 s
Time = 20
DILUPBiCG: Solving for Ux, Initial residual = 0.605269, Final residual = 0.0264 482, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.592722, Final residual = 0.0560 965, No Iterations 1
DILUPBiCG: Solving for Uz, Initial residual = 0.598655, Final residual = 0.0273 214, No Iterations 2
DICPCG: Solving for p, Initial residual = 0.136164, Final residual = 0.00529025 , No Iterations 2
time step continuity errors : sum local = 7.53995e+60, global = -4.89601e+50, cu mulative = -2.17093e+50
#0 Foam::error::printStack(Foam::Ostream&) in "/data/caehgb.za/studienarbeit-di rk/work/OpenFoam_ParaView/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libOpenFOA M.so"
#1 Foam::sigFpe::sigFpeHandler(int) in "/data/caehgb.za/studienarbeit-dirk/work /OpenFoam_ParaView/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libOpenFOAM.so"
#2 __restore_rt in "/lib64/tls/libc.so.6"
#3 Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigne d char) const in "/data/caehgb.za/studienarbeit-dirk/work/OpenFoam_ParaView/Open FOAM/OpenFOAM-1.7.1/lib/linux64GccDPOpt/libOpenFOAM.so"
#4 Foam::fvMatrix<double>::solve(Foam::dictionary const&) in "/data/caehgb.za/s tudienarbeit-dirk/work/OpenFoam_ParaView/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccD POpt/libfiniteVolume.so"
#5 Foam::incompressible::RASModels::kEpsilon::correct() in "/data/caehgb.za/stu dienarbeit-dirk/work/OpenFoam_ParaView/OpenFOAM/OpenFOAM-1.7.1/lib/linux64GccDPO pt/libincompressibleRASModels.so"
#6 main in "/data/caehgb.za/studienarbeit-dirk/work/OpenFoam_ParaView/OpenFOAM/ OpenFOAM-1.7.1/applications/bin/linux64GccDPOpt/simpleFoam"
#7 __libc_start_main in "/lib64/tls/libc.so.6"
#8 Foam::regIOobject::writeObject(Foam::IOstream::streamFormat, Foam::IOstream: :versionNumber, Foam::IOstream::compressionType) const in "/data/caehgb.za/studi enarbeit-dirk/work/OpenFoam_ParaView/OpenFOAM/OpenFOAM-1.7.1/applications/bin/li nux64GccDPOpt/simpleFoam"
Floating point exception
Best Regards,
tH3f0rC3 |
