# normal distance for wall trubulence

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 July 10, 2005, 15:21 normal distance for wall trubulence #1 jeff Guest   Posts: n/a In low-reynolds-number models, the normal distance to the wall is used in determining the "damping" functions. For one-dimensional flow, it is easy to identify this parameter; However, for two/three-dimensional corner flows, how to determine this wall distance? thanks a lot

 July 12, 2005, 04:19 Re: normal distance for wall trubulence #2 Halim Guest   Posts: n/a The following method is what CFX-5.6 is doing. D^2(F)=1. where D^2 is Laplacian operator. Wall Distance=sqrt((abs(grad(F))^2+2F)-abs(grad(f))) Above is given in CFX-5.6 Sover Theory, page 71. If you have difficulties in reading above equations, email to me.

 August 13, 2017, 15:55 #3 New Member   ASA Join Date: Mar 2017 Posts: 1 Rep Power: 0 Use Boundary Face Geometry: BOUNDARY_FACE_GEOMETRY(f,t,A,ds,es,A_by_es,dr0) ds will give you the near wall cell distance to the face centroid

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