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[ANSYS Meshing] Bad Boundary Mesh Error (Large Model)

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Old   April 13, 2019, 02:02
Post Bad Boundary Mesh Error (Large Model)
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Siva Chaitanya
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I have a very large domain, 1:1 scale - about 2050m x 4040m x 1200m, for a wind tunnel simulation of a 40mx50mx200m building. I have sliced the domain using the building faces.

I am trying to mesh the building with hexa elements as that is the area of my interest and tetra / hex cells on the domain. The problem is that i am unable to create any edge or face sizing properly. I have tried many things, decreasing the sizing element, changing the whole meshing method from sweep to multizone and even cutcell assembly meshing. I even played around with the sizing function, like adaptive, uniform and all, even toggling defeaturing on and off and nothing seems to help.

Also for obtaining the desired y+ value i tried applying inflation layers, which give the same error as with sizing above. I don't know what's causing it.

Please advice on how should i proceed to solve this issue. Attaching the geometry and failed mesh screen snips.
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File Type: jpg badboundarymesh.jpg (119.9 KB, 13 views)
File Type: jpg geo.jpg (107.7 KB, 7 views)
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inflation layer, meshing 3d, sizing

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