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how yPlus can affect the result?

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Old   January 9, 2010, 16:02
Question how yPlus can affect the result?
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Fatema Zandi Goharrizi
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hi
I use k-epsilon for my problem in cfx
I want to know if the yplus goes under 20 (as the limit of the parameter in this turbulent model), all of the simulation would be failed?
I don't want to check the parameters near the walls but I want to make meshes finner because the tangentical velocity vectors in the sections change due to this refining (the view of them).
I would appreciate your consult.
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Old   January 11, 2010, 12:54
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Tristan Burton
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Having y+ values less than twenty will not cause the simulation to fail. See the discussion of scalable wall functions in the ANSYS CFX-Solver Theory Guide for more detail on how CFX handles the near wall region with wall functions.

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Old   January 14, 2010, 03:09
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Fatema Zandi Goharrizi
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Quote:
Originally Posted by Tristan View Post
Having y+ values less than twenty will not cause the simulation to fail. See the discussion of scalable wall functions in the ANSYS CFX-Solver Theory Guide for more detail on how CFX handles the near wall region with wall functions.

Tristan

thank you very much
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