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The structure of highly sheared turbulence

Published online by Cambridge University Press:  26 April 2006

F. A. de Souza ,
V. D. Nguyen  and
S. Tavoularis
F. A. de Souza
Affiliation:
Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada Present Address: Centre d'Etudes Aérodynamiques et Thermiques, Université de Poitiers, 43 Rue de l'Aérodrome, 86036 Poitiers CEDEX, France.
V. D. Nguyen
Affiliation:
High Speed Aerodynamics Laboratory, National Research Council of Canada, Ottawa, Ontario K1A OR6, Canada
S. Tavoularis
Affiliation:
Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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Abstract

Uniformly sheared flows have been generated in a high-speed wind tunnel at shear rates higher than previously achieved, in an effort to approach those in the inner turbulent boundary layer. As at lower shear rates, the turbulence structure was found to attain a self-similar state with approximately constant anisotropies and exponential kinetic energy growth. The normal Reynolds stress anisotropies showed no systematic dependence upon the mean shear within the examined range; however, the shear stress anisotropy was significantly lower than the low-shear values, in conformity with boundary layer measurements and direct numerical simulations of homogeneous shear flow.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 303 , 25 November 1995 , pp. 155 - 167
Copyright
© 1995 Cambridge University Press

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