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Published July 10, 2000 | Published
Journal Article Open

Turbulent shear-layer mixing: growth-rate compressibility scaling


A new shear-layer growth-rate compressibility-scaling parameter is proposed as an alternative to the total convective Mach number, Mc. This parameter derives from considerations of compressibility as a means of kinetic-to-thermal-energy conversion and can be significantly different from Mc for flows with far-from-unity free-stream-density and speed-of-sound ratios. Experimentally observed growth rates are well-represented by the new scaling.

Additional Information

"Reprinted with the permission of Cambridge University Press." (Received 29 June 1998 and in revised form 11 August 1999) Published Online 8 September 2000. This work and the recent experiments cited (Slessor 1998) were supported by the Air Force Office of Scientific Research, Grants F49620-93-1-0338, F49620-94-1-0353, and F49620-98-1-0052. We would like to acknowledge the help of Earl Dahl in the execution of the recent experiments and the suggestion by one of the referees that the relation between [Pi]c and Mc should be depicted, leading to figure 5.

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