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REVIEW ARTICLES: Compressible Free Mixing and Jet Noise Reduction

Compressibility Effects on Turbulence Growth in High-Speed Shear Flows

[+] Author and Article Information
S. Sarkar

Department of Applied Mechanics and Engineering Sciences, University of California at San Diego, La Jolla CA 92093

Appl. Mech. Rev 47(6S), S179-S183 (Jun 01, 1994) doi:10.1115/1.3124401 History: Online April 29, 2009

Abstract

Compressibility effects on the evolution of turbulence are obtained from direct numerical simulation of homogeneous shear flow. It is found that when the gradient Mach number - a parameter based on the mean shear rate, integral length scale and speed of sound - increases, the growth of turbulent kinetic energy is inhibited. The reduced ‘efficiency’ of production is shown to lead to the inhibited growth of turbulent kinetic energy. Implications for inhomogeneous shear flows are discussed.

Copyright © 1994 by American Society of Mechanical Engineers
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