Journal of Fluid Mechanics

Reversion of turbulent to laminar flow

V. C.  Patel a1 and M. R.  Head a1
a1 Cambridge University Engineering Department

Article author query
patel vc   [Google Scholar] 
head mr   [Google Scholar] 


It has been shown experimentally that quite large departures occur from the universal inner-law velocity distribution in the presence of severe favourable pressure gradients in turbulent boundary layers and that these departures are associated with the tendency for the turbulent boundary layer to revert to a laminar state. From the measurements a criterion for the onset of reverse transition has been deduced in terms of the mean shear-stress gradient in the wall region of the flow. Experiments in fully developed pipe and channel flows suggest that the proposed criterion may be quite generally applicable to all fully turbulent shear flows.

(Published Online March 28 2006)
(Received March 12 1968)