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[Gmsh] gmshToFoam conversion issue!

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Old   January 27, 2021, 09:16
Default gmshToFoam conversion issue!
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Johny_walker
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I am getting the following error on converting my gmsh mesh file to foam:

Create time

Starting to read mesh format at line 2
Read format version 2.2 ascii 0

Starting to read physical names at line 5
Physical names:6
Surface 1 inlet
Surface 2 outlet
Surface 3 topAndBottomWalls
Surface 4 frontAndBack
Surface 5 cylwall
Volume 6 internal

Starting to read points at line 14
Vertices to be read:18320
Vertices read:18320

Starting to read cells at line 18337
Cells to be read:36286

Mapping region 4 to Foam patch 0
Mapping region 1 to Foam patch 1
Mapping region 3 to Foam patch 2
Mapping region 2 to Foam patch 3
Mapping region 5 to Foam patch 4
Cells:
total:0
hex :0
prism:0
pyr :0
tet :0



--> FOAM FATAL IO ERROR:
No cells read from file "untitled.msh"
Does your file specify any 3D elements (hex=5, prism=6, pyramid=7, tet=4)?
Perhaps you have not exported the 3D elements?

file: untitled.msh at line 54625.

From function void readCells(Foam::scalar, bool, const pointField&, const Foam::Map<int>&, Foam::IFstream&, Foam::cellShapeList&, Foam::labelList&, Foam::List<Foam:ynamicList<Foam::face> >&, Foam::labelList&, Foam::List<Foam:ynamicList<int> >&)
in file gmshToFoam.C at line 726.

FOAM exiting


Can anyone tell me why is it so? .Geo and .msh files can be accessed through:



https://www.dropbox.com/sh/t01a4gvxh...DgGOmmjua?dl=0

Regards
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Old   February 24, 2021, 01:52
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Asmaa
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Hello,

You simply need to add a volume in physical group ( Geometry --> Physical Groups --> Add --> Volume).

For the mesh generation, you need to generate a mesh of version 2.2 compatible for OpenFoam conversion, for this use the command: gmsh -3 -format msh2 unitled.geo

For the mesh conversion: gmshToFoam untitled.msh

The created volume appears in OpenFoam as a cellzone.
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Old   April 15, 2022, 13:46
Default Problems fixed!!??
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Saketh Bharadwaj
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Hello,

I came across a similar problem but could not solve it.

I created another thread. Can someone help me fix this.

Gmsh import into OpenFOAM
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