Gambit Importing

[JonGD]

Hi Chaps,


We are having some CFD flow analyses done of some of our CAD assemblies and the company undertaking this are importing the CAD files into Gambit to create the mesh for the CFD (as I understand it anyway).

We are using Solid Edge and the method I have used to try and simplify the files generated is to create a part copy of my assembly as a part (to generate one single solid model of the many components) and then save it as both .stp and .igs formats.

When Gambit tries to import the files, they are importing as many thousands of surfaces which is proving to be a pain!

Has anybody any experience using these packages together and can advise on the best method for importing from SE into Gambit? Or can anyone advise on the "common" 3D CAD file type Gambit is happiest with - I am not restricted to the two mentioned above! Alternatively will better results be seen by sending the solid part over in SE's native .par format?


Thanks


Jon

 

[Onda]

Hi,
I don't use SE but SolidWorks & Rhinoceros.
Anyway, usually you should provide to Gambit a single solid.
I mean You should obtain from your model, using boolean, the volume where the fluid should run.
I don't know how to do it in Solid Edge, but, I suppose that you should, simplify your model deleting fillets, holes, chamfers, etc.
As second step you should create a part from your assembly.
As third step You should use boolean to make a single solid volume.
Now you can supply this single solid to Gambit to generate the mesh.
I've only used CFX, so I can't help you in the process in Gambit, but I'm sure that you should follow this lines.
Try to keep the amount of surfaces as small as possible and the geometry as easy as possible to generate a good mesh in gambit.

Onda