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On the generation of spatially growing waves in a boundary layer

Published online by Cambridge University Press:  28 March 2006

M. Gaster
M. Gaster
Affiliation:
The College of Aeronautics, Cranfield, Bedford
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Abstract

The solution is obtained in general terms for the velocity fluctuations generated in a laminar boundary layer by an oscillating disturbance on the boundry wall. The form of excitation is chosen to represent a vibrating ribbon of the type used by Schubauer to force disturbance in boundary layers. The forced wave system generated by the ribbon is shown to be a spatially growing one, which is described far downstream by an eigenmode of the system which has a complex wave-number.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 22 , Issue 3 , July 1965 , pp. 433 - 441
Copyright
© 1965 Cambridge University Press

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