[Mahmoud_aboukhedr]

Hii All,
Am new with openfoam and am trying to solve a model using IcoFoam ... the model is quit big one ... but it should be easy solver to start with .... the checkMesh is :

Time = 0

Mesh stats
points: 1569626
faces: 10443507
internal faces: 9909246
cells: 4643941
faces per cell: 4.38265
boundary patches: 6
point zones: 0
face zones: 0
cell zones: 1

Overall number of cells of each type:
hexahedra: 600979
prisms: 76014
wedges: 0
pyramids: 499017
tet wedges: 0
tetrahedra: 3467931
polyhedra: 0

Checking topology...
Boundary definition OK.
***Total number of faces on empty patches is not divisible by the number of cells in the mesh. Hence this mesh is not 1D or 2D.
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
backandfront 407433 239569 ok (non-closed singly connected)
porous_wall 102427 110305 ok (non-closed singly connected)
buttom_wall 8125 8764 ok (non-closed singly connected)
inlet_r 4069 4396 ok (non-closed singly connected)
inlet_l 4082 4410 ok (non-closed singly connected)
outlet 8125 8764 ok (non-closed singly connected)

Checking geometry...
Overall domain bounding box (-2.5e-05 -1.25e-05 0) (2.5e-05 1.25e-05 1e-06)
Mesh (non-empty, non-wedge) directions (1 1 0)
Mesh (non-empty) directions (1 1 0)
***Number of edges not aligned with or perpendicular to non-empty directions: 5123085
<<Writing 1427139 points on non-aligned edges to set nonAlignedEdges
Boundary openness (-3.08979e-16 -2.22805e-16 -1.58208e-15) OK.
Max cell openness = 3.34869e-16 OK.
Max aspect ratio = 11.0922 OK.
Minimum face area = 3.13132e-16. Maximum face area = 3.13647e-14. Face area magnitudes OK.
Min volume = 2.60299e-24. Max volume = 5.5547e-21. Total volume = 7.80113e-16. Cell volumes OK.
Mesh non-orthogonality Max: 63.864 average: 18.1601
Non-orthogonality check OK.
Face pyramids OK.
***Max skewness = 4.18125, 17278 highly skew faces detected which may impair the quality of the results
<<Writing 17278 skew faces to set skewFaces
Coupled point location match (average 0) OK.


And I used the same icoFoam solver setup for the the elbow tutorial .... the only changes is in the control dict file :
application icoFoam;

startFrom latestTime;

startTime 0;

stopAt endTime;

endTime 5;

deltaT 0.0005;

writeControl timeStep;

everytime I run icoFoam I get this error ::

Create time

Create mesh for time = 0

Reading transportProperties

Reading field p

Reading field U

Reading/calculating face flux field phi


Starting time loop

Time = 0.0005

Courant Number mean: 16.0233 max: 52307.8
smoothSolver: Solving for Ux, Initial residual = 1, Final residual = 0.0992917, No Iterations 24
smoothSolver: Solving for Uy, Initial residual = 0, Final residual = 0, No Iterations 0
DICPCG: Solving for p, Initial residual = 1, Final residual = 0.0998527, No Iterations 643
DICPCG: Solving for p, Initial residual = 0.727682, Final residual = 0.0659464, No Iterations 2
time step continuity errors : sum local = 11140.1, global = 3.56008, cumulative = 3.56008
ExecutionTime = 202.81 s ClockTime = 203 s

Time = 0.001

Courant Number mean: 64199.9 max: 8.91455e+06
#0 Foam::error::printStack(Foam::Ostream&) at ??:?
#1 Foam::sigFpe::sigHandler(int) at ??:?
#2 in "/lib/x86_64-linux-gnu/libc.so.6"
#3 Foam::GaussSeidelSmoother::smooth(Foam::word const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char, int) at ??:?
#4 Foam::GaussSeidelSmoother::smooth(Foam::Field<doub le>&, Foam::Field<double> const&, unsigned char, int) const at ??:?
#5 Foam::smoothSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#6
at ??:?
#7
at ??:?
#8
at ??:?
#9
at ??:?
#10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#11
at ??:?
^CFloating point exception (core dumped)


Can anyone till me what does it mean and how to fix it ???