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The spanwise perturbation of two-dimensional boundary layers

Published online by Cambridge University Press:  28 March 2006

S. C. Crow
S. C. Crow
Affiliation:
Graduate Aeronautical Laboratories, California Institute of Technology
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Abstract

Large spanwise variations of boundary-layer thickness and surface shear have been found recently in wind tunnels designed to maintain two-dimensional flow. Bradshaw (1965) argues that these variations are caused by minute deflexions in the free-stream flow rather than by any intrinsic instability of the boundary layers. This paper is a study of the effect of a small, periodic transverse flow on a flat-plate boundary layer. The perturbation flow Reynolds number is assumed to be O(1) as it is in the experiments.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 24 , Issue 1 , January 1966 , pp. 153 - 164
Copyright
© 1966 Cambridge University Press

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References

Bradshaw, P. 1965 J. Fluid Mech. 22, 67.
Klebanoff, P. S. & Tidstrom, K. D. 1959 Evolution of amplified waves leading to transition in a boundary layer with zero pressure gradient. NASA TN D. 195.Google Scholar
Van Dyk'E, M. 1964 Perturbation Methods in Fluid Mechanics. New York: Academic Press.