# Wall function application

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 June 27, 2002, 19:57 Wall function application #1 Ola Guest   Posts: n/a I will like to know how the wall function is being implemented in the momentum equations for 2-D flow. Thanks. Ola

 June 27, 2002, 20:53 Re: Wall function application #2 Min-Hua Wang Guest   Posts: n/a Hello, All: Is any body familar with wall function in rotational frame of reference. Say if the wall is moving, should I still keep the same wall function? Is there any transformation between moving wall and still wall? Min-Hua Wang

 June 28, 2002, 00:29 Re: Wall function application #3 Wen Long Guest   Posts: n/a I guess should use vorticity relative to the local rotation of the wall. Is the wall deforming? Take Vr as the relative velocity of fluid relative to the wall, then Vr=Vf-Vw where Vf is absolute velicity of fluid, Vw is absolute velocity of the wall point then take Wr=Curl of Vr as the relative vorticity. Then try to use Wr in the wall function. Hope it works, or maybe other gurus have better ideas wen

 June 29, 2002, 14:29 Re: Wall function application #4 Min-Hua Wang Guest   Posts: n/a Thanks. I am wondering what I can do in convert the wall function in a CFX-4 environment. Min-Hua Wang

 June 29, 2002, 21:07 Re: Wall function application #5 Wen Long Guest   Posts: n/a Hi, Min-Hua: There is a very good review on vorticity conditions: M Napolitano, G Pascazio, L Quartapelle, "A review of vorticity conditions in the numerical solution of \xi-\psi equations", Computers & Fluids, Vol28, 1999, pp 139-185. Good luck, wen

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