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January 7, 2017, 01:23 |
Feature edge retention in CfMesh
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#1 |
Senior Member
Join Date: Nov 2010
Location: USA
Posts: 1,232
Rep Power: 24 |
Hello folks,
After being very frustrated with SHM's results on this test case, I wanted to try CfMesh. I have a pretty simple airfoil which I would like the trailing edge to have sharp features without much refinement. First, CfMesh seems to only support surfaces with a single size, is this true? I would like the surface to be finer at the LE and TE but along the bulk of the span to be bigger. Anyway, my main question is at the TE. If I excessively refine the surface (level 5 relative to my max size), I can get a nice sharp edge: http://imgur.com/8O5LcWU If I do level 4 it just turns to junk: http://imgur.com/YZrHXhJ You can clearly see where the mesh is best aligned with the template it looks great, but when we twist away from that we get garbage. IMO the level 4 is even too fine elsewhere. Is there any way to force the feature edge retention without blowing a million cells on the entire surface? And also preferably without having to define the TE as a separate surface? |
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