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The mechanics of an organized wave in turbulent shear flow

Published online by Cambridge University Press:  29 March 2006

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

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 41 , Issue 2 , 13 April 1970 , pp. 241 - 258
Copyright
© 1970 Cambridge University Press

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