Gmsh and Fluent 6.3

Blizzard85 · July 12, 2017, 05:15

Hello, how to use Gmsh mesh on Fluent 6.3? Ideed Gmsh can't generate .cas file...

mprinkey · July 12, 2017, 07:45

Gmsh and Gambit produce .msh files. Those contains only the mesh geometry data and face patches used for boundary conditions. You import the .msh file into Fluent and create the .cas file. That will contain flow information (like density, pressure, velocities at boundary conditions), model types, etc. along with the mesh date.

Good luck.

arjun · July 12, 2017, 08:02

Quote:

Originally Posted by mprinkey

Gmsh and Gambit produce .msh files. Those contains only the mesh geometry data and face patches used for boundary conditions. You import the .msh file into Fluent and create the .cas file. That will contain flow information (like density, pressure, velocities at boundary conditions), model types, etc. along with the mesh date.

Good luck.

I think the .msh produced by Gmsh is different and is based on finite element data.

There seem to be no converter so I am going to write one in coming days as I get time because for FVUS it is easier to work with Fluent format and many people can use this converter (as opposed to me converting it to FVUS format directly).
This is planned but I keep putting off in favour of other things.

Unfortunately it is no help as of now.

mprinkey · July 13, 2017, 00:13

You can try to OpenFOAM's convesion tools. You can convert the gmsh .msh file to OpenFOAM (gmshToFoam) and then convert the OpenFOAM mesh to a Fluent .msh file (foamMeshToFluent) and see what happens.

Blizzard85 · July 22, 2017, 10:57

Ok, thanks everyone. FVUS is free?

LuckyTran · July 22, 2017, 14:51

Quote:

Originally Posted by Blizzard85

Ok, thanks everyone. FVUS is free?

Yes, arjun wrote it.

zizhou · July 15, 2019, 10:12

It works, thank you! Besides, I still have problems with boundary conditions. The physical surfaces I set in Gmsh is missing after transformed into .msh for fluent. Could you tell me how to handle this?

Large Epic Simulations · July 19, 2019, 04:44

An alternative solution could be to export nastran bulk data file from gmsh to suddenly import it on fluent.
However, I've noticed that this doesn't work for some of the linux Fluent releases.

arjun · July 22, 2019, 23:31

Quote:

Originally Posted by Blizzard85

Ok, thanks everyone. FVUS is free?

Yes and No.

Depending on the purpose. In your case you don't need to pay for licensing.

Kimra · June 15, 2022, 23:46

Quote:

Originally Posted by arjun

I think the .msh produced by Gmsh is different and is based on finite element data.

There seem to be no converter so I am going to write one in coming days as I get time because for FVUS it is easier to work with Fluent format and many people can use this converter (as opposed to me converting it to FVUS format directly).
This is planned but I keep putting off in favour of other things.

Unfortunately it is no help as of now.

Hello arjun, I know it has been long but any chance with that gmsh to fluent converter?

July 12, 2017, 05:15	Gmsh and Fluent 6.3	#1
Blizzard85 New Member Filippo Join Date: Jul 2017 Posts: 4 Rep Power: 8	Hello, how to use Gmsh mesh on Fluent 6.3? Ideed Gmsh can't generate .cas file...

July 13, 2017, 00:13		#4
mprinkey Senior Member Michael Prinkey Join Date: Mar 2009 Location: Pittsburgh PA Posts: 363 Rep Power: 25	You can try to OpenFOAM's convesion tools. You can convert the gmsh .msh file to OpenFOAM (gmshToFoam) and then convert the OpenFOAM mesh to a Fluent .msh file (foamMeshToFluent) and see what happens. dokeun likes this.

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July 12, 2017, 07:45		#2
mprinkey Senior Member Michael Prinkey Join Date: Mar 2009 Location: Pittsburgh PA Posts: 363 Rep Power: 25	Gmsh and Gambit produce .msh files. Those contains only the mesh geometry data and face patches used for boundary conditions. You import the .msh file into Fluent and create the .cas file. That will contain flow information (like density, pressure, velocities at boundary conditions), model types, etc. along with the mesh date. Good luck.

July 22, 2017, 10:57		#5
Blizzard85 New Member Filippo Join Date: Jul 2017 Posts: 4 Rep Power: 8	Ok, thanks everyone. FVUS is free?

July 15, 2019, 10:12		#7
zizhou New Member zizhou huang Join Date: Jul 2019 Posts: 18 Rep Power: 6	It works, thank you! Besides, I still have problems with boundary conditions. The physical surfaces I set in Gmsh is missing after transformed into .msh for fluent. Could you tell me how to handle this?

July 19, 2019, 04:44		#8
Large Epic Simulations Member Join Date: Jun 2017 Posts: 39 Rep Power: 8	An alternative solution could be to export nastran bulk data file from gmsh to suddenly import it on fluent. However, I've noticed that this doesn't work for some of the linux Fluent releases.