CFD Online Discussion Forums

CFD Online Discussion Forums (
-   OpenFOAM Mesh Utilities (
-   -   GmshToFoam example (

guillaume February 24, 2008 17:18

hej, can I find an example ho
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 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?


7islands February 24, 2008 20:06

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.


guillaume February 25, 2008 04:34

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?


7islands February 25, 2008 21:06

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.


Gaia December 2, 2016 13:02

I'm using gmsh to create a mesh for an application of a solar updraft chimney. I wanted to use it with OpenFOAM, but when i run gmshToFoam some patches are not recognized, they appear as follows:

type patch;
physicalType patch;
nFaces 0;
startFace 910694;

I'm usign OF version 4.
Does anybody know how to solve this?
Thank you very much,
Best regards!

All times are GMT -4. The time now is 12:40.