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Old   December 25, 2007, 09:46
Default For a given field, can anyone
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Daniel WEI (老魏)
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For a given field, can anyone tell me how to calculate u+?

u+=U/u_tau
u_tau=sqrt(tau_w/rho)
tau_w=mu*(∂u/∂y)|y=0

Am I in the right way?

Merry Christmas to You All.
Daniel
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Old   January 14, 2008, 05:48
Default i have the same problem....in
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i have the same problem....in what way can i compute u+? is there a solver like computeYplus ??
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Old   January 14, 2008, 09:44
Default Yes, there are some utilities
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Yes, there are some utilities on yplus, like

checkYPlus
yPlusLES

Good luck!

Daniel
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Old   January 15, 2008, 06:45
Default Hello Daniel, you could wri
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Hello Daniel,

you could write your own application if you need u+.

By the way here http://www.cfd-online.com/cgi-bin/Op...8488#POST18488

is computed u_tau y /nu, so you can modify it to extract u+.

Rosario.
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