[jorsey]

Dear all,

I am a freshman in CFD. I have to work with OpenFoam with rhoSimplecFoam solver. I use the tutorials(rhoSimplecFoam) in the website and exchange the geometry. But I can't run it correctly. I have searched the answer everywhere, but still can't solve the problem. I really hope someone could help me. Thank you in advance.

error message:

/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.0.1 |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 2.0.1
Exec : rhoSimplecFoam
Date : Mar 04 2013
Time : 13:37:21
Host : dutinwk
PID : 7501
Case : /mnt/dutita1/nw/cheng/tutorials/Test0304-scale
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Disallowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create mesh for time = 0

Reading thermophysical properties

Selecting thermodynamics package hPsiThermo<pureMixture<sutherlandTransport<specieT hermo<hConstThermo<perfectGas>>>>>
Reading field U

Reading/calculating face flux field phi

Creating turbulence model

Selecting RAS turbulence model kEpsilon
kEpsilonCoeffs
{
Cmu 0.09;
C1 1.44;
C2 1.92;
C3 -0.33;
sigmak 1;
sigmaEps 1.3;
Prt 1;
}


SIMPLE: no convergence criteria found. Calculations will run for 500 steps.


Starting time loop

Time = 1

GAMG: Solving for Ux, Initial residual = 1, Final residual = 0.0683703, No Iterations 1
GAMG: Solving for Uy, Initial residual = 0.99999, Final residual = 0.057874, No Iterations 1
GAMG: Solving for Uz, Initial residual = 0.999991, Final residual = 0.056186, No Iteratio
GAMG: Solving for p, Initial residual = 1, Final residual = 0.0247388, No Iterations 2
time step continuity errors : sum local = 1.71503e+08, global = -1.71218e+08, cumulative =
rho max/min : 1 0.382345
GAMG: Solving for h, Initial residual = 1, Final residual = 0.0383179, No Iterations 1
#0 Foam::error:rintStack(Foam::Ostream&) in "/opt64/OpenFOAM-2.0.1/OpenFOAM-2.0.1/platf/libOpenFOAM.so"
#1 Foam::sigFpe::sigHandler(int) in "/opt64/OpenFOAM-2.0.1/OpenFOAM-2.0.1/platforms/linuxAM.so"
#2 in "/lib64/libc.so.6"
#3 Foam::hPsiThermo<Foam:ureMixture<Foam::sutherlan dTransport<Foam::specieThermo<Foam::ctGas> > > > >::calculate() in "/opt64/OpenFOAM-2.0.1/OpenFOAM-2.0.1/platforms/linux64GccDhysicalModels.so"
#4 Foam::hPsiThermo<Foam:ureMixture<Foam::sutherlan dTransport<Foam::specieThermo<Foam::ctGas> > > > >::correct() in "/opt64/OpenFOAM-2.0.1/OpenFOAM-2.0.1/platforms/linux64GccDPOsicalModels.so"
#5
in "/opt64/OpenFOAM-2.0.1/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/bin/rhoSimplecFoam"
#6 __libc_start_main in "/lib64/libc.so.6"
#7
at /glibc-tmp-6341ca4bac93b935314b1241c89966aa/glibc-2.13/csu/../sysdeps/x86_64/elf/start
Floating point exception

[fredo490]

From my experience of rhoSimplecFoam, it seems that your case lead to an abrupt change of the variable (a divergence in other words) and the sutherland fonction cannot give back values corresponding to your current cases values (maybe the velocity of the pressure are too high).

by the way, if you have something like this, it is better to give more info about your case of even enclosed your case as a zip file.