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How can I find the recommended y+ values for turbulence models?

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Old   July 12, 2019, 18:26
Default How can I find the recommended y+ values for turbulence models?
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Hello,

How can I find the recommended y+ values for turbulence models such as realizable k-epsilon and SST k-omega?

Once I find these can I use them to calculate a first cell height during meshing?

Thank you.

Update: according to some material I found from ANSYS, walls can be resolved in two ways:
1. wall functions, where the y+ value lies between 30 and 300 (30<y+<300)
2. resolving the viscous sublayer, where y+ should remain at 1 or very close to 1.

It seems like there's no recommended y+ values for different turbulence models, instead for the strategy used to mesh the walls.

Last edited by Bran; July 13, 2019 at 09:57. Reason: update
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