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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX March 8, 2015, 21:19

Replies: 9 Y+ for K-Epsilon Model Views: 20,986 Posted By ghorrocks No, the mesh is not moved. If y+<11 then you just... No, the mesh is not moved. If y+<11 then you just apply the wall shear stress as if it was 11, that's all.

Forum: CFX March 8, 2015, 04:03

Replies: 9 Y+ for K-Epsilon Model Views: 20,986 Posted By ghorrocks Not quite right. The scalable approach assumes... Not quite right. The scalable approach assumes that if on the first node y+<11 then it just makes it 11. This means it actually shifts the boundary layer position a little, in effect meaning the wall...

Forum: CFX March 6, 2015, 20:12

Replies: 9 Y+ for K-Epsilon Model Views: 20,986 Posted By ghorrocks Most people say the normal wall function approach... Most people say the normal wall function approach is OK down to 11. So you should be OK at 30. And the scalable wall function approach allows you to go below 11 without problems (usually). y+ is...

Forum: CFX March 6, 2015, 05:06

Replies: 9 Y+ for K-Epsilon Model Views: 20,986 Posted By ghorrocks No! Don't get confused by scaleable wall... No! Don't get confused by scaleable wall functions. The y+ range she mentions is way above where the scalable wall functions will do much. Scalable wall functions only do anything when y+ goes below...

Forum: CFX March 5, 2015, 21:28

Replies: 9 Y+ for K-Epsilon Model Views: 20,986 Posted By ghorrocks There is no universal answer to that. If there... There is no universal answer to that. If there was it would make sure it always happened. Some simulations are sensitive to it and some are not. The best way to be sure is to generate a few meshes...

Showing results 1 to 5 of 5

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