Friction velocity
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Dimensional analysis shows that at a wall a charateristic velocity, called the ''friction velocity'', <math>u_*</math>, can be defined in the following way: | Dimensional analysis shows that at a wall a charateristic velocity, called the ''friction velocity'', <math>u_*</math>, can be defined in the following way: | ||
Revision as of 15:32, 19 December 2008
trocere
Dimensional analysis shows that at a wall a charateristic velocity, called the friction velocity, 
, can be defined in the following way:
Where 
is the wall shear stress and 
is the fluid density at the wall.
