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Smagorinsky coefficient average on planes parallel to walls |
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June 12, 2014, 09:33 |
Smagorinsky coefficient average on planes parallel to walls
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#1 |
Senior Member
Huang Xianbei
Join Date: Sep 2013
Location: Yangzhou,China
Posts: 302
Rep Power: 13 |
Hi,all:
In channel flow LES, the most common way to use dynamic LES is to average Smagorinsky coefficient along the plane parallel to the wall. As OF's structured meshes are not described as i,j,k , it's not so convenient to do this kind of average. In postChannel utility, a typical method to do the average is to set a front face and walk along the normal direction to do the average of each mesh region, so the easiest way to do is like this: 1/ output the cD and cI as OF standard file 2/ call postChannel 3/ set the cD as a function of y, and match the averaged values to all the meshes My question is: how can I define cD as a function as y and match cD to the mesh at specific y location? (ps: this method is not efficient at all, I'll appreciate if there is more easier way) Xianbei |
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