Review—Transition in Nonreversing Oscillating Boundary Layers

[+] Author and Article Information
R. I. Loehrke

Colorado State University, Fort Collins, Colo.

M. V. Morkovin, A. A. Fejer

Mechanics and Mechanical and Aerospace Engineering, Illinois Institute of Technology, Chicago, Ill.

J. Fluids Eng 97(4), 534-549 (Dec 01, 1975) (16 pages) doi:10.1115/1.3448111 History: Received September 30, 1975; Online October 12, 2010


Literature on transition in oscillating boundary layers is relatively recent and confusing. The paper first reviews the current thinking on transition in steady boundary layers and on the role of stability theory. The reader is then provided with a background on oscillating boundary layers. The various reports of transition in such boundary layers are analyzed and clarified. The concept of excited wave packets, moving downstream through the “pulsating” boundary layer and cumulatively growing or decaying, largely in response to the transient vorticity distribution, appears to unify much of the data. Recent experiments, designed to test the ingredients of the concept, are reported. Other forms of transition are discussed and their probable occurrence in the domains of interest to practical engineers is mapped out.

Copyright © 1975 by ASME
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