CFD Online Discussion Forums - [Gmsh] Gmsh

Hi to everyone,
i have installed OP1-6, and i've compiled the tutorial file "cavity" with rhoPisoFoam, and obliously, it worked until time 10.0.

than i created a mesh with Gmsh, (this is the .geo) file:

Point(1) = {1, 1, 0, 0.1};
Point(2) = {1, -1, 0, 0.1};
Point(3) = {-1, -1, 0, 0.1};
Point(4) = {-1, 1, 0, 0.1};
Point(5) = {1, -1, 0.1, 0.1};
Point(6) = {1, 1, 0.1, 0.1};
Point(10) = {-1, 1, 0.1, 0.1};
Point(14) = {-1, -1, 0.1, 0.1};
Line(1) = {1, 4};
Line(2) = {4, 3};
Line(3) = {3, 2};
Line(4) = {2, 1};
Line(8) = {5, 6};
Line(9) = {6, 10};
Line(10) = {10, 14};
Line(11) = {14, 5};
Line(13) = {2, 5};
Line(14) = {1, 6};
Line(18) = {4, 10};
Line(22) = {3, 14};
Line Loop(6) = {4, 1, 2, 3};
Plane Surface(6) = {6};
Line Loop(15) = {4, 14, -8, -13};
Ruled Surface(15) = {15};
Line Loop(19) = {1, 18, -9, -14};
Ruled Surface(19) = {19};
Line Loop(23) = {2, 22, -10, -18};
Ruled Surface(23) = {23};
Line Loop(27) = {3, 13, -11, -22};
Ruled Surface(27) = {27};
Line Loop(28) = {8, 9, 10, 11};
Plane Surface(28) = {28};
Surface Loop(1) = {6, 28, 15, 19, 23, 27};
Volume(1) = {1};
Physical Surface("movingWall") = {19};
Physical Surface("frontAndBack") = {6, 28};
Physical Surface("fixedWalls") = {15, 23, 27};
Physical Volume(29) = {1};

................................
i made the mesh, and i tried to compile it with the same solver and the same boundary condictions.
however the solver stopped, at time 3.58.

Courant Number mean: 198.24 max: 1.67227e+06
Time = 3.58

diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for Ux, Initial residual = 0.998601, Final residual = 2.41959, No Iterations 1001
DILUPBiCG: Solving for Uy, Initial residual = 0.998444, Final residual = 14.9385, No Iterations 1001
DILUPBiCG: Solving for Uz, Initial residual = 0.998493, Final residual = 2.08993, No Iterations 1001
DILUPBiCG: Solving for h, Initial residual = 0.996783, Final residual = 0.626569, No Iterations 1001

Maximum number of iterations exceeded#0 Foam::error::printStack(Foam::Ostream&) in "/home/s-m/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/home/s-m/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libOpenFOAM.so"
#2 Foam::hPsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::calculate() in "/home/s-m/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libbasicThermophysicalModels.so"
#3 Foam::hPsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::correct() in "/home/s-m/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libbasicThermophysicalModels.so"
#4 main in "/home/s-m/OpenFOAM/OpenFOAM-1.6/applications/bin/linuxGccDPOpt/rhoPisoFoam"
#5 __libc_start_main in "/lib/tls/i686/cmov/libc.so.6"
#6 _start at /usr/src/packages/BUILD/glibc-2.9/csu/../sysdeps/i386/elf/start.S:122

From function specieThermo<thermo>::T(scalar f, scalar T0, scalar (specieThermo<thermo>::*F)(const scalar) const, scalar (specieThermo<thermo>::*dFdT)(const scalar) const) const
in file /home/dm2/henry/OpenFOAM/OpenFOAM-1.6/src/thermophysicalModels/specie/lnInclude/specieThermoI.H at line 68.

I noticed that:

the courant numer is high, but in the tutorial is allways small.
the evolution of the fluid is different between my file and the first (i saw it with paraview).

So i think that the problem is the only the mesh, because it's the only difference, but what i have to do for adjust it?

thank you to everyone!