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The development of a partially mixed region in a stratified shear flow

Published online by Cambridge University Press:  29 March 2006

R. J. Hartman
R. J. Hartman
Affiliation:
Department of Physics, University of California, Santa Barbara
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Abstract

The influence of a mean uniform shear on the development of a partially mixed region in an unbounded stratified fluid is considered. Results are given for the very near field and the far field in the large-J (Richardson number) limit. A qualitative discussion for J [gsim ] 1 is also included. The near-field motion is modified on a time scale given by Rτ ∼ J−¼, where R = dU/dz is the mean shear strength. This modification is shown to be a consequence of the kinematic distortion of the wake profile by the mean shear. The radiation field is largely anticipated by the wave-packet discussion of an earlier paper.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 71 , Issue 2 , 23 September 1975 , pp. 407 - 415
Copyright
© 1975 Cambridge University Press

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References

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