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-   -   floating-point exception (http://www.cfd-online.com/Forums/openfoam-bugs/131224-floating-point-exception.html)

vitorspadeto March 11, 2014 13:35

floating-point exception
 
I typed in my icoFoam simulation ... but during the solution of the problem for me a strange error occurred ... could someone help me?




Time = 0.02

Courant Number mean: 4.68652 max: 147.282
smoothSolver: Solving for Ux, Initial residual = 0.684281, Final residual = 9.81462e-06, No Iterations 358
smoothSolver: Solving for Uy, Initial residual = 0.703995, Final residual = 9.75952e-06, No Iterations 328
smoothSolver: Solving for Uz, Initial residual = 0.667195, Final residual = 9.90306e-06, No Iterations 192
DICPCG: Solving for p, Initial residual = 0.986274, Final residual = 8.25583e-07, No Iterations 568
time step continuity errors : sum local = 3.36085e-05, global = 1.625e-07, cumulative = 2.27159e-07
DICPCG: Solving for p, Initial residual = 0.25685, Final residual = 7.96574e-07, No Iterations 561
time step continuity errors : sum local = 8.31849e-05, global = -4.63043e-07, cumulative = -2.35884e-07
ExecutionTime = 30.92 s ClockTime = 31 s

Time = 0.025

Courant Number mean: 47.9784 max: 1456.76
#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::sigFpe::sigHandler(int) at ??:?
#2 in "/lib/x86_64-linux-gnu/libc.so.6"
#3 Foam::symGaussSeidelSmoother::smooth(Foam::word const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char, int) at ??:?
#4 Foam::symGaussSeidelSmoother::smooth(Foam::Field<d ouble>&, Foam::Field<double> const&, unsigned char, int) const at ??:?
#5 Foam::smoothSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#6
at ??:?
#7
at ??:?
#8
at ??:?
#9
at ??:?
#10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#11
at ??:?
Exceção de ponto flutuante (imagem do núcleo gravada)

MY OBSERVATION>>>GOOGLE TRANSLATOR
Exceção de ponto flutuante (imagem do núcleo gravada) = floating-point exception (core image recorded)

ANYONE KNOWS WHAT THIS MEANS?? HOW TO FIX IT??

THANKS ALL!

alexeym March 12, 2014 05:22

Quote:

Originally Posted by vitorspadeto (Post 479404)
Time = 0.025

Courant Number mean: 47.9784 max: 1456.76
#0 Foam::error:rintStack(Foam::Ostream&) at ??:?

Don't you think 1456 is to much for Courant number? Check your initial and boundary conditions.

Quote:

Exceção de ponto flutuante (imagem do núcleo gravada)

MY OBSERVATION>>>GOOGLE TRANSLATOR
Exceção de ponto flutuante (imagem do núcleo gravada) = floating-point exception (core image recorded)
This is rather usual message for the program that caught a terminating signal. So this message has actually nothing to do with your problem.


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