# Law of the wall

(Difference between revisions)
 Revision as of 22:13, 16 May 2006 (view source)Jola (Talk | contribs)← Older edit Revision as of 05:50, 17 December 2008 (view source)m (getgetcad)Newer edit → Line 1: Line 1: + deldar In the log layer the velocity profile can be estimated with the log law: In the log layer the velocity profile can be estimated with the log law:

## Revision as of 05:50, 17 December 2008

deldar In the log layer the velocity profile can be estimated with the log law:

$u^+ = \frac{1}{\kappa} \, ln(y^+) + C$

Where:

 $u^+$ Dimensionless velocity $y^+$ Dimensionless wall distance $\kappa$ von Karman's constant ($\approx 0.41$) $C$ Constant ($\approx 5.1$)

We should have a lin-log plot here of a typical turbulent boundary layer to illustrate where the log-law is valid, anyone have one handy?