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-   -   pisoFoam solver error (http://www.cfd-online.com/Forums/openfoam-solving/101305-pisofoam-solver-error.html)

akkupant April 30, 2012 14:09

pisoFoam solver error
 
Hi all,
i'm trying to simulate an axisymmetric jet in OpenFoam using the pisofoam solver......when i run the solver....after one or two time steps ,it gives an error............i'm providing u with my blockMeshDict file and the error...............



/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.1.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters .001;

vertices
(
(0 0 0)//0
(-10 0 0)//1
(-10 4.9952 -.218166)//2
(0 4.9952 -.218166)//3
(-10 4.9952 .218166)//4
(0 4.9952 .218166)//5
(2000 4.9952 .218166)//6
(2000 4.9952 -.218166)//7
(2000 0 0)//8
(0 998.096 -43.633)//9
(0 998.096 43.633)//10
(2000 998.096 43.633)//11
(2000 998.096 -43.633)//12

);

blocks
(
hex (3 7 6 5 0 8 8 0) (50 1 50) simpleGrading (1 1 1)
hex (9 12 11 10 3 7 6 5) (50 1 50) simpleGrading (1 1 1)

);

edges
(
);

patches
(
patch inlet
(
(0 3 5 0)
)

patch outlet
(
(8 7 6 8)
(7 12 11 6)

)

wall upperwall
(
(3 9 10 5)
)
wedge front
(
(0 5 6 8)
(5 10 11 6)

)
wedge back
(
(3 7 12 9)
(0 8 7 3)

)

empty bases
(
(0 8 8 0)

)

);

mergePatchPairs
(
);



the error is.........

Time = 0.05

Courant Number mean: 1.28732e+80 max: 1.07637e+83
#0 Foam::error::printStack(Foam::Ostream&) in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#1 Foam::sigFpe::sigHandler(int) in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#2 Uninterpreted:
#3 Foam::DILUPreconditioner::calcReciprocalD(Foam::Fi eld<double>&, Foam::lduMatrix const&) in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#4 Foam::DILUPreconditioner::DILUPreconditioner(Foam: :lduMatrix::solver const&, Foam::dictionary const&) in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#5 Foam::lduMatrix::preconditioner::addasymMatrixCons tructorToTable<Foam::DILUPreconditioner>::New(Foam ::lduMatrix::solver const&, Foam::dictionary const&) in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#6 Foam::lduMatrix::preconditioner::New(Foam::lduMatr ix::solver const&, Foam::dictionary const&) in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#7 Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#8
in "/opt/openfoam210/platforms/linuxGccDPOpt/bin/pisoFoam"
#9
in "/opt/openfoam210/platforms/linuxGccDPOpt/bin/pisoFoam"
#10
in "/opt/openfoam210/platforms/linuxGccDPOpt/bin/pisoFoam"
#11 __libc_start_main in "/lib/i386-linux-gnu/libc.so.6"
#12
in "/opt/openfoam210/platforms/linuxGccDPOpt/bin/pisoFoam"
Floating point exception

i would appreciate your help......................................

santiagomarquezd May 1, 2012 09:08

...
Checking...
...
...
...
Not enough info for problem diagnose, please post you system/ and 0/ files
...
Abort

sivakumar May 2, 2012 06:01

Hello Akkupant,
I have checked your case, I am not able to see inlet in your case.
please check your blockMeshDict file, the defined patches are correct or not.

I will get back to you in 3 to 4 hours.
check the below fig, is it correct?
if yes just tell me your inlet and outlet.

http://www.cfd-online.com/Forums/dat...AASUVORK5CYII=
with regards,
Sivakumar

sivakumar May 2, 2012 06:12

1 Attachment(s)
Hello Akkupant,
I have checked your case, I am not able to see inlet in your case.
please check your blockMeshDict file, the defined patches are correct or not.


check the attached fig, is it correct?
if yes just tell me your inlet and outlet.

http://www.cfd-online.com/Forums/dat...AASUVORK5CYII=
with regards,
Sivakumar


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