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-   -   How to get the wall shear stress by UDF (http://www.cfd-online.com/Forums/fluent/31710-how-get-wall-shear-stress-udf.html)

Chen Fangzhi June 24, 2003 12:13

How to get the wall shear stress by UDF
 
I need the value of wall shear stress of the first cell close to a wall and use it to get the friction velocity by UDF. Is there any Macro available to do this? Also, is it possible to get the yplus of a cell near a wall (not necessary the first cell to the wall)?

Thanks a lot!!!

Chen Fangzhi June 24, 2003 12:17

Re: How to get the wall shear stress by UDF
 
The flow is turbulent and I use the RSM model.I want to fix the normal Reynolds stress component as an empirical function of y+. It is important to get the value of y+ or wall shear stress from which to get y +.

Hanz May 21, 2010 09:32

Hi,

I know the post was a while ago.

Did you find out how to access the wall shear stress using a UDF ?

m zahid November 11, 2014 07:03

hi
 
hi, have u find the answer please share this, i want to calculate the wall shear and y plus at first node height and also the reynold number
thanks


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