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achyutan July 8, 2013 08:21

potentialFoam error
 
1 Attachment(s)
Hi,

I need to run unsteady incompressible flow in pisoFoam. Since my soln was blowing up, I wanted to start from steady state soln and i turned towards potentialFoam.

I get floating point exception error when running potentialFoam.
Code:

[sudarsan@nebula run]$ potentialFoam
/*---------------------------------------------------------------------------*\
| =========                |                                                |
| \\      /  F ield        | OpenFOAM: The Open Source CFD Toolbox          |
|  \\    /  O peration    | Version:  2.1.1                                |
|  \\  /    A nd          | Web:      www.OpenFOAM.org                      |
|    \\/    M anipulation  |                                                |
\*---------------------------------------------------------------------------*/
Build  : 2.1.1-221db2718bbb
Exec  : potentialFoam
Date  : Jul 09 2013
Time  : 00:32:24
Host  : "nebula.iitm"
PID    : 27873
Case  : /home/sudarsan/home/my_cases/stat_cylinder/run
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 field p

Reading field U


Calculating potential flow
DICPCG:  Solving for p, Initial residual = 1, Final residual = 6.12067e-07, No Iterations 64
DICPCG:  Solving for p, Initial residual = 0.18173, Final residual = 7.69672e-07, No Iterations 56
DICPCG:  Solving for p, Initial residual = 0.103597, Final residual = 9.29651e-07, No Iterations 53
DICPCG:  Solving for p, Initial residual = 0.068186, Final residual = 9.67935e-07, No Iterations 55
continuity error = 7.12386e-06
#0  Foam::error::printStack(Foam::Ostream&) in "/root/OpenFOAM/OpenFOAM-2.1.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#1  Foam::sigFpe::sigHandler(int) in "/root/OpenFOAM/OpenFOAM-2.1.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#2 
 at sigaction.c:0
#3  Foam::inv(Foam::Field<Foam::SymmTensor<double> >&, Foam::UList<Foam::SymmTensor<double> > const&) in "/root/OpenFOAM/OpenFOAM-2.1.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#4 
 in "/root/OpenFOAM/OpenFOAM-2.1.1/platforms/linux64GccDPOpt/bin/potentialFoam"
#5 
 in "/root/OpenFOAM/OpenFOAM-2.1.1/platforms/linux64GccDPOpt/bin/potentialFoam"
#6 
 in "/root/OpenFOAM/OpenFOAM-2.1.1/platforms/linux64GccDPOpt/bin/potentialFoam"
#7 
 in "/root/OpenFOAM/OpenFOAM-2.1.1/platforms/linux64GccDPOpt/bin/potentialFoam"
#8  __libc_start_main in "/lib64/libc.so.6"
#9 
 in "/root/OpenFOAM/OpenFOAM-2.1.1/platforms/linux64GccDPOpt/bin/potentialFoam"
Floating point exception

my mesh has got non-orthogonality issues. I am attaching the case here.
can somebody help me ?

achyutan


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