[ANSYS Meshing] Bad Mesh Quality on octogonal prism -- CFD Online Discussion Forums

November 22, 2017, 14:12	Bad Mesh Quality on octogonal prism	#1
Chris26 New Member Christian B. Join Date: Nov 2017 Posts: 1 Rep Power: 0	Hello everyone, I am currently analyzing a tower with an unstructured mesh in ICEM CFD 17.2, but I also want to create a block-structured mesh to compare both results regarding the mesh-sensitivity. I am validating the tower with a wind tunnel experiment. I was able to narrow my problem down to a simple octogonal prism. I am not able to create a structured mesh with just this rather simple geometry. Pictures: https://imgur.com/a/ghfOC The reason why I chose to split the edges like that lies within the geometry that originally lies underneath it. With these splits I get no problems with the other geometry underneath it. The only bad elements lie right above the prism as seen in the last picture. Thanks for any help on this!

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