[syavash]

Dear mates,

I am new to Gmsh. I have tried to convert an existing 3-D gmsh file to OpenFOAM format using gmshToFoam utility. I was successful in opening the grid file and I have assigned names to the 2-D surfaces using Physical Groups-->Add. Also, I specified name to the volume. I have attached the geo file for more information (I have renamed it to txt so I can upload it!).

However, when I try to convert the modified gmsh file using gmshToFoam utility, I get messages like the following:

Unhandled element 12 at line ...

And in the end I have the following error message:

No cells read from file "test4"
Does your file specify any 3D elements (hex=5, prism=6, pyramid=7, tet=4)?
Perhaps you have not exported the 3D elements?

file: test4 at line 620821.

    From function readCells(..)
    in file gmshToFoam.C at line 726.

FOAM exiting

Unfortunately, the size of the initial gmsh file is large, so I put the link to the file below:

http://www.as.dlr.de/hiocfd/c3.6_gri...x32_p2.msh.bz2

The question is what I am doing wrong? Could anyone please tell me where the problem lies?

Regards,
Syavash

[mzzmrt]

This may be a solution unless you don't have the original *.geo script of this mesh;

1. Open the file (phill_64x32x32_p2_gmsh) with gmsh
2. Create a 3D mesh with it (on the left menu: mesh>3D)
3. File>export test.mesh (as version 2 ascii format)
4. put this *.msh in the OpenFOAM case directory
5. run gmshToFoam test.msh
6. run autoPatch 80 - overwrite
7. run paraFoam to check the pacth names
8. configure the boundary, nut, U, P, etc. files according to this patch names (or change them in the boundary file) and types...

[syavash]

Originally Posted by mzzmrt

This may be a solution unless you don't have the original *.geo script of this mesh;

1. Open the file (phill_64x32x32_p2_gmsh) with gmsh
2. Create a 3D mesh with it (on the left menu: mesh>3D)
3. File>export test.mesh (as version 2 ascii format)
4. put this *.msh in the OpenFOAM case directory
5. run gmshToFoam test.msh
6. run autoPatch 80 - overwrite
7. run paraFoam to check the pacth names
8. configure the boundary, nut, U, P, etc. files according to this patch names (or change them in the boundary file) and types...

Wow! Thank you. The creation of the 3-D mesh did the trick.

Kind Regards,
Syavash

[arashgmn]

Originally Posted by mzzmrt

This may be a solution unless you don't have the original *.geo script of this mesh;

1. Open the file (phill_64x32x32_p2_gmsh) with gmsh
2. Create a 3D mesh with it (on the left menu: mesh>3D)
3. File>export test.mesh (as version 2 ascii format)
4. put this *.msh in the OpenFOAM case directory
5. run gmshToFoam test.msh
6. run autoPatch 80 - overwrite
7. run paraFoam to check the pacth names
8. configure the boundary, nut, U, P, etc. files according to this patch names (or change them in the boundary file) and types...

This won't identify the interior surfaces (for instance, when there are sliding sub-domains, the intersection can be defined as an interior physical group which is totally invisible to autoPatch.)