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[mesh manipulation] How to remove an extra domain in split Mesh Region?

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Old   April 1, 2021, 01:54
Default How to remove an extra domain in split Mesh Region?
Sunag R A
Join Date: Jul 2019
Location: Bangalore, India
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Dear All,

I have created a stl mesh using open3D from point cloud. This mesh was split into two domains as a patch and then added back using "surfaceAdd". Now, this mesh is implemented into snappyHexMeshDict.

I mesh is running well. But, when I do splitMeshRegion after some topoSet addition, it creates multiple domains, where my cellZoneRegion has only two regions and I need only these two regions.

The splitMeshRegion creates an extra domian which needs to be eliminated or added to the major region. How to do that? I have attached an image where the red color represents the extra domian created. It has only 3 face.

Below is the snippet of splitMeshRegion.

Region Zone Name
------ ---- ----
0 1 gland
1 0 tumor
2 -1 domain2

Sizes of interfaces between regions:

Interface Region Region Faces
--------- ------ ------ -----
0 0 1 278
1 0 2 3

Here "domain2" is the extra region created.
Attached Images
File Type: png domain.png (93.5 KB, 10 views)
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domain, openfoam, snappy hex mesh, splitmeshregions

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