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-   -   Question on openning mesh from Fluent (https://www.cfd-online.com/Forums/fluent/29657-question-openning-mesh-fluent.html)

Derek Jing April 20, 2002 11:04

Question on openning mesh from Fluent
 
Hi, I am a new user of fluent and have a question.

I built a model in Gambit and export it as a mesh (*.msh) file. However, I can not use FLUENT to open this mesh file. In FLUENT, I use File>Read>Case, but it does not work. How can I open msh file in Fluent?

Thank you very much

Peter April 21, 2002 09:57

Re: Question on openning mesh from Fluent
 
What message do you get in FLUENT?

Derek Jing April 21, 2002 10:56

Re: Question on openning mesh from Fluent
 
In Fluent, I used File>Read>Case command.

Then I use Filter to choose my mesh file made from Gambit. I select my mesh file (its extension is *.msh) and then Fluent told me that:

Error: sopeninputfiles: unable to open file for input Error object: "h:/.../my_mesh.msh.cas"

================================================== Can I only open a *.msh file in Fluent instead of opening *.cas file? Thank you very much for your help.

derek Jing

Derek Jing April 21, 2002 10:59

Re: Question on openning mesh from Fluent
 
Hi, Peter,

can you tell me the ordinary procedure of importing mesh (exported from Gambit) into Fluent? Thank you very much.

Derek

Peter April 22, 2002 14:22

Re: Question on openning mesh from Fluent
 
Peter,

from your mesh generator you obtain the *.msh file. Then what you do is invoking the right version of FLUENT (2d or 3d depending on your mesh). Then you just use: File+Open+Case, and specify your .msh file. When FLUENT reads the mesh, you still need to do some operation: Scale your mesh (if you created it in mm), Check the mesh (Check that the minimum volume and area are greater than zero). If you want, you can smooth the grid. Finally, it is interesting to visulize the mesh and check cell aspect ratio and stretching of the mesh near the walls.

Any case, if you created the mesh alright in Gambit, FLUENT should be able to read it without problems. Check that you are using the right version of FLUENT (2d or 3d). Your mesh file should be called name.msh.

Good luck

Derek Jing April 22, 2002 15:55

Re: Question on openning mesh from Fluent
 
Oh, I know what's the problem now. I only started Fluent but did not invoke the 3d version. Thank you Peter ! Have a good day!

Derek


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