Setting physical entities with Gmsh using an STL object

Prapanchnair · March 8, 2021, 08:51

Supppose I have an STL file for a 3d part and I want to apply a boundary condition to a face of it. Note that the STL comes as a single part. Is there a way I can set the physical entities (ID) for a group of nodes that belong to the patch within Gmsh?

For example, I have an part for which I need to to modal analysis with calculix. Can I pick a patch, and assign the nodes of the patch a fixed boundary condition and then use calculix to solve the modes?

If yes, what is the procedure in Gmsh. If you have a video tutorial that you found somewhere, please share that as well.

Thanks and Regards,
PN.

pavithra Kalarani · April 8, 2021, 08:45

Hi
I have the same problem.
Have you found any solution for that?.
In my case I have to import into the openfoam.

Thanks and Regards,
Pavithra

March 8, 2021, 08:51	Setting physical entities with Gmsh using an STL object	#1
Prapanchnair New Member Prapanch Name Join Date: May 2016 Posts: 2 Rep Power: 0	Supppose I have an STL file for a 3d part and I want to apply a boundary condition to a face of it. Note that the STL comes as a single part. Is there a way I can set the physical entities (ID) for a group of nodes that belong to the patch within Gmsh? For example, I have an part for which I need to to modal analysis with calculix. Can I pick a patch, and assign the nodes of the patch a fixed boundary condition and then use calculix to solve the modes? If yes, what is the procedure in Gmsh. If you have a video tutorial that you found somewhere, please share that as well. Thanks and Regards, PN.

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April 8, 2021, 08:45		#2
pavithra Kalarani New Member France Join Date: Apr 2021 Posts: 1 Rep Power: 0	Hi I have the same problem. Have you found any solution for that?. In my case I have to import into the openfoam. Thanks and Regards, Pavithra