||June 26, 2013 05:31
ICEM, y+<1 and VORFN mesh quality problems / FLUENT
Hi all. I'm currently meshing a flow which includes flow around a cylinder (O-grid mesh type here) that has been cut in half. My turbulence models require a y+ of 1 or under and as such have some high aspect-ratio and low quality cells via an unstructured mesh. Nothing too bad.
However, in ICEM, the VORFN blocks contain cells of extremely low quality/high aspect ratio. When importing into FLUENT I get the following "Warning: minimum Orthogonal Quality below 0.01.". I have tried to modify the VORFN blocks and has reduced the problem marginally. However, the cells of low quality are not found in the 'visible' part of the mesh.
Wondering if there is a way round this in ICEM and how much this will affect my results/convergence etc.?
Thanks for any help!