Journal of Fluid Mechanics



The mechanics of an organized wave in turbulent shear flow


A. K. M. F.  Hussain a1 and W. C.  Reynolds a1
a1 Department of Mechanical Engineering, Stanford University

Article author query
hussain ak   [Google Scholar] 
reynolds wc   [Google Scholar] 
 

Abstract

Some preliminary results on the behaviour of controlled wave disturbances introduced artificially into turbulent channel flow are reported. Weak plane-wave disturbances are introduced by vibrating ribbons near each wall. The amplitude and relative phase of the streamwise component of the induced wave is educed from a hot wire signal, allowing the wave speed and attenuation characteristics and the wave shape to be traced downstream. The normal component and wave Reynolds stress have been inferred from these data. It appears that Orr–Sommerfeld theories attempted to date are inadequate for description of these waves.

(Published Online March 29 2006)
(Received September 2 1969)



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