[waynezw0618]

i use MRFSimplefoam to study a centrifugal pump impeller study.the error message is here:
Starting time loop

Time = 1

smoothSolver: Solving for Ux, Initial residual = 1, Final residual = 0.011922, No Iteratio ns 2
smoothSolver: Solving for Uy, Initial residual = 1, Final residual = 0.0120694, No Iterati ons 2
smoothSolver: Solving for Uz, Initial residual = 1, Final residual = 0.0108551, No Iterati ons 4
GAMG: Solving for p, Initial residual = 1, Final residual = 0.036556, No Iterations 4
time step continuity errors : sum local = 2.09951, global = -0.0470533, cumulative = -0.047 0533
#0 Foam::error::printStack(Foam:stream&) in "/root/OpenFOAM/OpenFOAM-1.4.1/lib/linux64Gc cDPOpt/libOpenFOAM.so"
#1 Foam::sigFpe::sigFpeHandler(int) in "/root/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/ libOpenFOAM.so"
#2 ?? in "/lib64/libc.so.6"
#3 Foam::divide(Foam::Field<double>&, Foam::UList<double> const&, Foam::UList<double> cons t&) in "/root/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so"
#4 void Foam::divide<foam::fvpatchfield,>(Foam::GeometricF ield<double,>&, Foam::GeometricField<double,> const&, Foam::GeometricField<double,> const&) in "/r oot/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libincompressibleTurbulenceModel s.so"
#5 Foam::tmp<foam::geometricfield<double,> > Foam::opera tor/<foam::fvpatchfield,>(Foam::tmp<foam::geometricfie ld<double,> > const&, Foam::GeometricField<double,> const&) in "/root/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libincompressibleTurbul enceModels.so"
#6 Foam::turbulenceModels::kEpsilon::correct() in "/root/OpenFOAM/OpenFOAM-1.4.1/lib/linux 64GccDPOpt/libincompressibleTurbulenceModels.so"
#7 main in "/root/OpenFOAM/root-1.4.1/applications/bin/linux64GccDPOpt/MRFSimpleFoam"
#8 __libc_start_main in "/lib64/libc.so.6"
#9 __gxx_personality_v0 in "/root/OpenFOAM/root-1.4.1/applications/bin/linux64GccDPOpt/MRF SimpleFoam"
Floating point exception


could you please tell me how can i resolve it?

[waynezw0618]

the problem has been resolved ,the error was because of initial condition.but i find the solver is very sensitive to the initial condition.but i am not quiet sure aboule MRFSimplefoam espcially in the cellset and faceset,does anyone can give me some detail about that?

[maja]

Hi! I have OpenFOAM 1.6 installed and I am trying to run the case ercoftacCentrifugalPump with MRFSimpleFoam. The tutorial case mixerVessel2D runs ok. But when I do the Allrun in the ECPGgi2D case, I get many errors. I attached the part of the log file from where it starts complaining. I will be very glad if anyone can look at it and tell me what is wrong. I also do not understand why I get zipped polyMesh directory in ECPGgi2d/constant and also all the necessary files in rotor2D/constant/polyMesh and stator2D/constant/polyMesh are zipped. Should it be this way?
Thanks a lot in advance. Regards Maja

[maja]

Silly question, sorry. I figured it out by running step by step.

[Andrey M.]

Hello All!
I've started with MRFSimpleFoam(http://openfoamwiki.net/index.php/MRFSimpleFoam) and found that during tutorial running error appeared
I run it on Fedora 12 64bit in OpenFOAM 1.6.

Time = 24
smoothSolver: Solving for Ux, Initial residual = 0.0934226, Final residual = 7.76705e-05, No Iterations 4
smoothSolver: Solving for Uy, Initial residual = 0.201955, Final residual = 7.19406e-05, No Iterations 4
smoothSolver: Solving for Uz, Initial residual = 0.650546, Final residual = 0.000468391, No Iterations 4
GAMG: Solving for p, Initial residual = 1, Final residual = 5.27797e-05, No Iterations 12
GAMG: Solving for p, Initial residual = 0.0345404, Final residual = 2.89731e-06, No Iterations 41
GAMG: Solving for p, Initial residual = 0.0136359, Final residual = 1.30493e-06, No Iterations 30
time step continuity errors : sum local = 3.35079e+55, global = -2.11556e+54, cumulative = -2.11556e+54
smoothSolver: Solving for epsilon, Initial residual = 1, Final residual = 0.000295048, No Iterations 6
bounding epsilon, min: -8.96572e+93 max: 3.22637e+97 average: 1.15066e+93
#0 Foam::error:rintStack(Foam::Ostream&) in "/home/Andrey/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#1 Foam::sigFpe::sigFpeHandler(int) in "/home/Andrey/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#2
at sigaction.c:0
#3 Foam::LimitedScheme<double, Foam::limitedLinearLimiter<Foam::NVDTVD>, Foam::limitFuncs::magSqr>::limiter(Foam::Geometric Field<double, Foam::fvPatchField, Foam::volMesh> const&) const in "/home/Andrey/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libfiniteVolume.so"
#4 Foam::limitedSurfaceInterpolationScheme<double>::w eights(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) const in "/home/Andrey/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libfiniteVolume.so"
#5 Foam::fv::gaussConvectionScheme<double>::fvmDiv(Fo am::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>&) const in "/home/Andrey/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libfiniteVolume.so"
#6 Foam::tmp<Foam::fvMatrix<double> > Foam::fvm::div<double>(Foam::GeometricField<double , Foam::fvsPatchField, Foam::surfaceMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>&, Foam::word const&) in "/home/Andrey/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libincompressibleRASModels.so"
#7 Foam::tmp<Foam::fvMatrix<double> > Foam::fvm::div<double>(Foam::GeometricField<double , Foam::fvsPatchField, Foam::surfaceMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>&) in "/home/Andrey/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libincompressibleRASModels.so"
#8 Foam::incompressible::RASModels::kEpsilon::correct () in "/home/Andrey/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libincompressibleRASModels.so"
#9
in "/home/Andrey/OpenFOAM/Andrey-1.6/applications/bin/linux64GccDPOpt/MRFSimpleFoam"
#10 __libc_start_main in "/lib64/libc.so.6"
#11
in "/home/Andrey/OpenFOAM/Andrey-1.6/applications/bin/linux64GccDPOpt/MRFSimpleFoam"
Floating point exception (core dumped)

Can you show a way how to solve that? I see that epsilon and k increase too much and I suppose that this is the main reason why this is fail but I don't understand what I need to correct.

[Thomas_Lloyd]

Maja,

I also have a zipped polyMesh folder. How did you solve this problem?

Regards,

Thomas