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March 18, 2019, 14:39 |
Turbulent velocity profile
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#1 |
Member
Andrea
Join Date: Mar 2018
Posts: 62
Rep Power: 8 |
Hello, i'm trying to reconstract in matlab a turbulent velocity profile with the law of the wall, log law and power law.
first of all i calculate Reynolds number, then i use darcy weissbach law for calculate friction factor (f) and so wall shear stress (t_wall). Now i calculated friction velocity, u+ and y+. u+=y+ for 0<y+<5 u+ = 1/k *ln(y+) + 1.33 for 30<y+<500 u/V_max = (y/R)^(1/5) for outer region. am i doing something wrong? How can i attach those curves? thanks |
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