CFD Online Discussion Forums - 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......................................