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March 18, 2010, 15:22 |
How is yplus calculated in OF?
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#1 |
New Member
Join Date: Mar 2010
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Can someone offer some insight into what OF does when you calculate "yPlusRAS"? When I view the output "y" (distance from the wall) in Paraview, the numbers look right. When I plot "yplus", it seems to only give me one non-zero value at the node closest to the wall. Also, I can't seem to figure out how it exactly arrives at that number - does it use u_tau = sqrt(k)*C_mu^0.25 (where k is the turbulent kinetic energy)? If so, which value of k does it use? The value at the node nearest to the wall?
I apologize if this was posted elsewhere but I couldn't find any specific info on it and it was a bit unclear looking in the source code. |
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March 22, 2010, 08:24 |
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#2 |
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Bump. Any input?
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March 27, 2010, 22:07 |
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#3 |
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Sandy Lee
Join Date: Mar 2009
Posts: 213
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Yes, good method to output from parafoam.
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May 19, 2010, 11:20 |
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#4 | |
Senior Member
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Quote:
For example yPlusRas outputs Code:
y+ : min: 0.300666258352 max: 4.7795851505 average: 2.08585637331 EDIT: the error seems to come from the yPlus file that is being written. |
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May 19, 2010, 19:37 |
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#5 |
Senior Member
Sandy Lee
Join Date: Mar 2009
Posts: 213
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How to give the yplus to multiphase flows, it seems that values in multiphase pattern and single phase pattern are different to the wall turbulence. Who can give some light? Thanks.
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