ICEM CFD – Difference between 3D free block type and volume mesh (Octree etc)

- April 5, 2023 at 6:40 pm
  
  Timothy Braun
  Subscriber
  
  I have a geometry that I can mostly block for a structured mesh, but I have one part/zone that should just get tetrahedral mesh (even if later merged to some mixture of hex and polyhedral cells). I think I would prefer to set up a block in the one zone and assign it a type of "3d free block". Should I instead use the volume (unstructured) mesh operation for the one zone and then merge it with my blocked mesh?
- April 6, 2023 at 6:46 am
  
  NickFL
  Subscriber
  
  Do what you are most comfortable with. The results should be independent upon the mesh (grid study) so the choice should not matter.
- April 7, 2023 at 5:34 am
  
  Keyur Kanade
  Ansys Employee
  
  It also depends on if you want conformal mesh or non conformal mesh. If you creat hex mesh with block and then rest is tet then you will need to merge nodes to get conformal mesh.
  Please go through help manual for more details
  Regards,
  Keyur
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