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-   -   [mesh manipulation] Сombining stl surface meshes (https://www.cfd-online.com/Forums/openfoam-meshing/234934-ombining-stl-surface-meshes.html)

Reptider March 24, 2021 10:36
Сombining stl surface meshes
 
1 Attachment(s)
Hello!
There are different stl files. Their surfaces are randomly refined. It's supposed they are connected, because created using step files (check union.png).
How can I unite them for getting a single external surface (single.png)?
I can't use boolean operations in Gmsh, because stl format isn't supported there.
If I simply add the start of second stl in first and then use cartesianMesh, I get problems at boundary.
Do utilites like stitchMesh or mergeMeshes may help? I have read about them, but i'm not sure, how they should be used.
Thanks!
Attachment 83508

nasa55 March 25, 2021 05:26
Quote:
Originally Posted by Reptider (Post 799749)
Hello!
There are different stl files. Their surfaces are randomly refined. It's supposed they are connected, because created using step files (check union.png).
How can I unite them for getting a single external surface (single.png)?
I can't use boolean operations in Gmsh, because stl format isn't supported there.
If I simply add the start of second stl in first and then use cartesianMesh, I get problems at boundary.
Do utilites like stitchMesh or mergeMeshes may help? I have read about them, but i'm not sure, how they should be used.
Thanks!
Attachment 83508

I couldn't understand well. Would you like to merge the .stl files or the mesh created regarding those files? Second, wich meshing tool did you use to create the grids?

Reptider March 31, 2021 13:53
Quote:
Originally Posted by nasa55 (Post 799823)
I couldn't understand well. Would you like to merge the .stl files or the mesh created regarding those files? Second, wich meshing tool did you use to create the grids?
I know how to merge stl files. I think, I want to merge mesh. Grids are created by GMSH.


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