Law of the wall

(Difference between revisions)

Revision as of 22:13, 16 May 2006

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?

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@@ Line 13: / Line 13: @@
 |<math>\kappa</math> || von Karman's constant (<math>\approx 0.41</math>)
 |-
-|<math>C</math> || Constant (<math>\approx 5.0</math>)
+|<math>C</math> || Constant (<math>\approx 5.1</math>)
 |}