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July 10, 2005, 15:21 |
normal distance for wall trubulence
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#1 |
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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 |
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July 12, 2005, 04:19 |
Re: normal distance for wall trubulence
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#2 |
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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. |
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August 13, 2017, 15:55 |
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#3 |
New Member
ASA
Join Date: Mar 2017
Location: USA
Posts: 6
Rep Power: 9 |
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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