Law of the wall
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(Difference between revisions)
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:<math>u^+ = \frac{1}{\kappa} \, ln(y^+) + B</math> | :<math>u^+ = \frac{1}{\kappa} \, ln(y^+) + B</math> | ||
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+ | and close to the wall in the viscous sublayer | ||
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+ | :<math>u^+ = y^+</math> | ||
Where: | Where: |
Revision as of 13:53, 18 June 2010
In the log layer the velocity profile can be estimated with the log law:
and close to the wall in the viscous sublayer
Where:
Dimensionless velocity Dimensionless wall distance von Karman's constant () Constant ()
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?
In the image y is replaced with the letter n.