[Gmsh] Problem meshing a sphere. gmsh crash meshing or not recognize the volume.

[Esteban Vargas]

Hi.

I'm a new user of gmsh, I have developed some tutorials in it, but now i
have several problemas.

I'm trying to simulate the flow around a sphere, the main goal is calculate
the drag force and drag coefficient in OpenFOAM. However, I'm having a lot
of problems creating the mesh, I've made two process to generate the mesh
with no success at all.

First way.
1. I generate a CAD model in solidEDGE, in that model I draw a solid volume
with the hole of the sphere (boolean operation). The volume represent the
all fluid.
2. I export the CAD Model into step, stl and igs files.
3. In gmsh, merge the step model.
4. gmsh show the surfaces, points and volumes rigth (gmsh show the walls in
gray solid color).
5. Define the physical groups, surfaces with no problem.
6. When I try to select the volume in physical group is just impossible.

Second Way
As the geometry is a bit simple, I decided to draw the sphere and the box
in which its embeded in gmsh.

1. I draw some points to define the sphere.
2. Create circle arc to define the sphere.
3. With those circle arcs created I defined ruled surface in the sphere.
4. Then Create the box around the sphere.
5. The surfaces in physical groups are defined normally, but I created a
surface call sphere, in which I select the all ruled surfaces created on
the sphere.
6. Select the volume in the physical groups (WHEN I DEFINED THE PHYSICAL
GROUPS I'VE ALREADY DEFINED THE VOLUME AND SURFACES IN ELEMENTARY ENTITIES)
7. Then, with everything O.K. I try to create the mesh, but the program
just crash, and close.

I have a problem to open gmsh to, everytime I try to open it I have to
write in the console (Ubuntu) this: gmsh primary.geo -tol 1e-9

I attach the geo file.

Thanks! I really appreciate any comment about it.

spheredesarrollada.geo is the second way file generated.
sphereNueva.geo is the first way file
-- 
Esteban Vargas Bolívar
Metálicas Léguz S.A.
Tel.: (4)5203600 Ext. 103
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