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I'm trying to do a CFD with a model of the air volume. The air passes from a relatively large area through narrow spaces and into another large area. If I set the mesh size small enough to get nodes within the narrow areas, the number of elements for the whole model is huge. Is there a way to mesh with large tets in the big open spaces and smaller ones in the narrow passageways?
I would suggest to first generate a global coarse mesh (as coarse as possible) with a high percentage in "Global Mesh Setting".
And then locally select the nodes (use rectangle select) and right click add refinement points. I just used this method this afternoon, gives desired results.
![Autodesk Design & Make Report](https://forums.autodesk.com/t5/image/serverpage/image-id/1350519iCB55845EBFC43016/image-size/large?v=v2&px=999" "Autodesk Design & Make Report")