[richard.chung.jones]

Dear Foamers,

I am a beginner of OpenFOAM. I am now doing validation of 3D Bump-In Channel from NASA Turbulence Modelling Resources. The mesh is 9 by y-points, 89 by x-points and 41 by z-points.I am using the SpalartAllmaras model and pimpleFoam for solving.

I have been getting floating point error and I know the Co increases rapidly at the 10th time step. The following is the print stack that I have got:

Foam::error::printStack(Foam::Ostream&) at ??:?
#1  Foam::sigFpe::sigHandler(int) at ??:?
#2  ? in "/lib/x86_64-linux-gnu/libc.so.6"
#3  double Foam::sumProd<double>(Foam::UList<double> const&, Foam::UList<double> const&) at ??:?
#4  Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#5  ? at ??:?
#6  ? at ??:?
#7  ? at ??:?
#8  ? at ??:?
#9  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#10  ? at ??:?

Where should I debug? Can anyone tell me which problem is it happening?
If you need the log file, I can attach it to the next thread.
I will be glad if anyone can help me.