Problematic Geometry

Frequently more complex geometry generated in solid modellers cause trouble with the mesh generators, even after a 'fix' has been applied. It appears bodies of revolution are particularly troublesome. Are there specific techniques to employ in the modeling to improve the robustness of the meshing operation?

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Use the Accuracy Tool

I don't think the problem lies with the geometry as imported into Caedium. It sounds to me like you need to apply mesh constraints according to:

  1. Select the Conditions->Accuracy tool in the Physics Tool Palette
  2. In the Properties Panel set the Accuracy option to Custom
  3. Drag and drop the Conditions->Accuracy tool onto the faces that need extra resolution
  4. In the Properties Panel keep increasing Accuracy: Custom->Resolution until you get the surface mesh density you want
  5. Try generating the volume mesh

For more details try:

Note that each RANS Flow tutorial, with the exception of the 2D airfoil, demonstrates the use of the Accuracy tool in order to better control the mesh generation process.

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