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The stability of an unsteady Kelvin–Helmholtz flow

Published online by Cambridge University Press:  28 March 2006

R. E. Kelly
R. E. Kelly
Affiliation:
Department of Aeronautics and Astronautics, Massachusetts Institute of Technology
Present address: Aerodynamics Division, National Physical Laboratory, Teddington, Middlesex.
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Abstract

The investigation concerns the stability of an interface between two inviscid fluids of different densities which flow parallel to each other in an oscillatory manner. When the difference in the mean speeds is below the steady, critical speed for instability but is large compared to the amplitude of the fluctuations, parametric amplification of waves at the interface occurs, and the interface exhibits a resonance of a subharmonic nature. The paper concludes with a discussion of the stability of unsteady shear layers on the basis of the results.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 22 , Issue 3 , July 1965 , pp. 547 - 560
Copyright
© 1965 Cambridge University Press

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