[sg571]

Hello Foamers,

I am currently working on fluid flow in a rectangular case with electrodes placed inside (these are placed in such a way that the fluid travels in between the electrodes in zig zag manner).

I am working in 3D with steady flow and the solver used is simpleFoam. while i am simulating the iterations are been stopped at 6 and showing the error as below.

Time = 6

smoothSolver: Solving for Ux, Initial residual = 0.993905, Final residual = 0.0858968, No Iterations 9
smoothSolver: Solving for Uy, Initial residual = 0.982857, Final residual = 0.0847699, No Iterations 9
smoothSolver: Solving for Uz, Initial residual = 0.998165, Final residual = 0.0865682, No Iterations 9
#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::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const at ??:?
#4 Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMa trix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const at ??:?
#5 Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#6 Foam::fvMatrix<double>::solveSegregated(Foam::dict ionary const&) at ??:?
#7 Foam::fvMatrix<double>::solve(Foam::dictionary const&) at ??:?
#8 Foam::fvMatrix<double>::solve() at ??:?
#9 ? at ??:?
#10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#11 ? at ??:?
Floating point exception (core dumped)


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please have a look on checkMesh

/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: dev |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : dev-f1240a853c45
Exec : checkMesh
Date : Jun 23 2017
Time : 13:14:24
Host : "Gens-CFD"
PID : 29762
Case : /home/linux/Pictures/pitzDaily
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations

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

Create polyMesh for time = 0

Time = 0

Mesh stats
points: 705079
internal points: 76213
faces: 4696956
internal faces: 3439228
cells: 2034046
faces per cell: 4
boundary patches: 6
point zones: 0
face zones: 1
cell zones: 1

Overall number of cells of each type:
hexahedra: 0
prisms: 0
wedges: 0
pyramids: 0
tet wedges: 0
tetrahedra: 2034046
polyhedra: 0

Checking topology...
Boundary definition OK.
Cell to face addressing OK.
Point usage OK.
Upper triangular ordering OK.
Face vertices OK.
Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces...
Patch Faces Points Surface topology
inlet 3584 1881 ok (non-closed singly connected)
outlet 3584 1881 ok (non-closed singly connected)
front_and_back 324960 169714 ok (non-closed singly connected)
topandbottom 86976 45079 ok (non-closed singly connected)
fixedwalls 446496 227785 ok (non-closed singly connected)
heater 392128 199979 ok (non-closed singly connected)

Checking geometry...
Overall domain bounding box (-4.74551e-18 0 0) (0.28 0.165 0.045)
Mesh has 3 geometric (non-empty/wedge) directions (1 1 1)
Mesh has 3 solution (non-empty) directions (1 1 1)
Boundary openness (-5.53563e-15 1.08718e-18 -2.6387e-18) OK.
Max cell openness = 7.11546e-16 OK.
Max aspect ratio = 17.575 OK.
Minimum face area = 2.5745e-08. Maximum face area = 0.000120768. Face area magnitudes OK.
Min volume = 2.75791e-12. Max volume = 3.55206e-07. Total volume = 0.0018765. Cell volumes OK.
Mesh non-orthogonality Max: 77.679 average: 31.9159
*Number of severely non-orthogonal (> 70 degrees) faces: 883.
Non-orthogonality check OK.
<<Writing 883 non-orthogonal faces to set nonOrthoFaces
Face pyramids OK.
Max skewness = 2.11575 OK.
Coupled point location match (average 0) OK.

Mesh OK.

End


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can anyone please help me out.

Thanks
Sai