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-   OpenFOAM Mesh Utilities (http://www.cfd-online.com/Forums/openfoam-meshing-utilities/)
-   -   GmshToFoam example (http://www.cfd-online.com/Forums/openfoam-meshing-utilities/61556-gmshtofoam-example.html)

guillaume February 24, 2008 16:18

hej, can I find an example ho
 
hej,
can I find an example how to use gmshToFoam in any of the OpenFOAM downloads?

I want to use a mesh (.msh) generated by gmsh for Navier-Stokes solver.

The openfoamwiki.net describes how to convert a gmsh gemoetry (.geo) file for OpenFOAM using gmsh2ToFoam. Is the '2' in the executable name a typo or is it different from the executable for a .msh?

Guillaume

7islands February 24, 2008 19:06

Hi Guillaume You'll find tw
 
Hi Guillaume

You'll find two example .msh files CubeVer1.msh and piece-extr-rec.msh.gz under OpenFOAM-1.4.1/applications/utilities/mesh/conversion/gmshToFoam/.

gmsh2ToFoam is a user contributed utility downloadable from wiki and made when gmshToFoam still hadn't supported .msh file format version 2.

Takuya

guillaume February 25, 2008 03:34

Thank you, Takuya! I was searc
 
Thank you, Takuya! I was searching through the complete OpenFoam directory for *.msh files, but somehow I missed them in the obvious location.

Now I have applied gmshToFoam succesfully to the CubeVer1.msh. At least there are no error messages, only one warning.

But the CubeVer1.msh doesn't contain any patch names. How can I use it with the icoFoam/cavity example, where movingwall, front, back,... patches names are used to identify the boundary conditions?

Guillaume

7islands February 25, 2008 20:06

Hi Guillaume, You have to che
 
Hi Guillaume,
You have to check which patch name (patch0, patch1, ...) is assigned to which physical surface number from the message output of gmshToFoam (the number suffixes of patch0, patch1, ... don't necessarily match the physical surface number assigned in a .msh file) during conversion and hand-edit polyMesh/boundary afterwards.

If you'd like to use information contained in $PhysicalNames section of .msh file version 2 format, as far as I know gmsh2ToFoam is the choice so far.

Takuya


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