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Prism layer meshing to get correct Y+

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Old   June 6, 2017, 22:28
Default Prism layer meshing to get correct Y+
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Suraj Pawar
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I am modelling KA 4 70 propeller using SST k-w gamma transition modeling. I am trying to do meshing such that I get value of Y+=1 so that boundary layer separation can be predicted. I tried adjusting the prism layer thickness but I am still get Y+ value greater than 1 at few places.

My prism layer thickness is 0.25, prism layer growth rate 1.2 and number of layers 10. I changed prism layer thickness from 0.5 to 0.25. Can you please guide me which parameters should I change to get smaller value of Y+?

I am not able to get sufficient prism layers at trailing edge as the edge is sharp (wedge shape).My leading edge is also sharp but I was able to get prism layers at Leading edge.

Thank you.
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File Type: jpg prismlayer.JPG (34.4 KB, 153 views)
File Type: jpg trailingedge.JPG (49.7 KB, 221 views)
File Type: jpg leadingedge.JPG (79.4 KB, 186 views)
File Type: jpg pressureside.JPG (39.6 KB, 156 views)
File Type: jpg suctionside.JPG (41.8 KB, 103 views)
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