About the nut wall function in RAS
Hello everyone,
This is Pei, I have a question about the wall function of nu in RAS model, I found in the code, nutw[faceI] = nuw[faceI]*(yPlus*kappa_/log(E_*yPlus) - 1.0) However, the book I am reading says it should be nutw[faceI] = nuw[faceI]*(yPlus*kappa_/log(E_*yPlus) ) Can angone explain the difference? Thank you very much! |
Hey Pei,
In the log-Layer we can assume that nu_t >>nu Therefore we can approximate nuw[faceI]*(yPlus*kappa_/log(E_*yPlus) - 1.0) = nuw[faceI]*yPlus*kappa_/log(E_*yPlus)-nuw[faceI] ~~nuw[faceI]*yPlus*kappa_/log(E_*yPlus) |
All times are GMT -4. The time now is 00:20. |