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The mechanics of an organized wave in turbulent shear flow. Part 2. Experimental results

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 Present address: Department of Mechanical Engineering, University of Houston, Houston, Texas.
W. C. Reynolds
Affiliation:
Department of Mechanical Engineering, Stanford University
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Abstract

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, the attenuation characteristics and the wave shape to be traced downstream. These results form a basis for evaluation of closure models for the dynamical equations describing wave components in shear-flow turbulence.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 54 , Issue 2 , 25 July 1972 , pp. 241 - 261
Copyright
© 1972 Cambridge University Press

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References

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