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-   -   Floating point exception (core dumped) (http://www.cfd-online.com/Forums/openfoam-solving/122962-floating-point-exception-core-dumped.html)

Punt3r September 1, 2013 20:04

Floating point exception (core dumped)
 
im very new to Openfoam and am trying to learn it. I want to run a flat plate case to compare to blasius soln. I setup the mesh and initial conditions and geometry (according to my understanding :P)

im trying to run the flat plate case using icoFoam for 1000 iterations with a deltaT of 0.01, so total 10 secs.
so my simulation runs until 1.66 secs i.e. 166 iterations. then at 1.67 i get the following error and dump msg.. ive included the msg frm 1.66 secs for ref if needed..

Time = 1.66

Courant Number mean: 1.03658e+89 max: 1.19227e+91
DILUPBiCG: Solving for Ux, Initial residual = 0.99532, Final residual = 15.6817, No Iterations 1001
DILUPBiCG: Solving for Uy, Initial residual = 0.998739, Final residual = 3.49624, No Iterations 1001
DICPCG: Solving for p, Initial residual = 1, Final residual = 7.47581, No Iterations 1001
time step continuity errors : sum local = 2.97164e+93, global = -1.6172e+91, cumulative = -1.61721e+91
DICPCG: Solving for p, Initial residual = 0.984306, Final residual = 3.82589, No Iterations 1001
time step continuity errors : sum local = 7.6204e+95, global = 2.29239e+93, cumulative = 2.27621e+93
ExecutionTime = 9.87 s ClockTime = 16 s

Time = 1.67

Courant Number mean: 1.5404e+96 max: 1.81873e+98
#0 Foam::error::printStack(Foam::Ostream&) in "/opt/openfoam221/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#1 Foam::sigFpe::sigHandler(int) in "/opt/openfoam221/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#2 in "/lib/x86_64-linux-gnu/libc.so.6"
#3 double Foam::sumProd<double>(Foam::UList<double> const&, Foam::UList<double> const&) in "/opt/openfoam221/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#4 Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/opt/openfoam221/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#5
in "/opt/openfoam221/platforms/linux64GccDPOpt/bin/icoFoam"
#6
in "/opt/openfoam221/platforms/linux64GccDPOpt/bin/icoFoam"
#7
in "/opt/openfoam221/platforms/linux64GccDPOpt/bin/icoFoam"
#8
in "/opt/openfoam221/platforms/linux64GccDPOpt/bin/icoFoam"
#9 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#10
in "/opt/openfoam221/platforms/linux64GccDPOpt/bin/icoFoam"
Floating point exception (core dumped)

I apologize if its something stupid. like i mentioned in my post, im very new and trying to learn on my own... im not completely confident about my case setup also.

Thanks a lot and i appreciate your time... :D

Mojtaba.a September 3, 2013 08:51

Hi,

Try uploading your case to take a look at.


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