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RESEARCH PAPERS

More on the Turbulent-Strip Theory for Wake-Induced Transition

[+] Author and Article Information
R. E. Mayle

Department of Mechanical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12181

K. Dullenkopf

Lehrstuhl und Institut für Thermische Strömungsmaschinen, Universität Karlsruhe (T.H.), D-7500 Karlsruhe, Germany

J. Turbomach 113(3), 428-432 (Jul 01, 1991) (5 pages) doi:10.1115/1.2927892 History: Received January 23, 1990; Online June 09, 2008

Abstract

A theory for transition from laminar to turbulent flow with an unsteady, periodic passing of turbulent wakes in the free stream has recently been presented by the authors. The theory considers a time-averaged transitional flow caused by the formation and propagation of turbulent strips along the surface. To apply the theory, however, both the origin and a quantity related to the production rate of these turbulent strips must be known. In this paper, after a brief review of the theory, a dimensional analysis of the problem is presented and data from experiments reexamined in light of the result. From this, an expression for the time-averaged intermittency is obtained, which may be used to calculate the time-averaged distributions of various boundary layer quantities for wake-induced transitional flow.

Copyright © 1991 by The American Society of Mechanical Engineers
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