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Effect of rotation on the stability of a doubly diffusive fluid layer

Published online by Cambridge University Press:  20 April 2006

Arne J. Pearlstein
Arne J. Pearlstein
Affiliation:
Mechanics and Structures Department, University of California, Los Angeles, California 90024
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Abstract

The stability of a rotating doubly diffusive fluid is considered. It is shown that (1) a non-rotating layer can be destabilized by rotation, (2) a rotating layer can be destabilized by the addition of a bottom-heavy solute gradient, and (3) under some conditions, three thermal Rayleigh numbers are required to specify linear stability criteria. Numerical results are presented on the basis of which the explanation by Acheson (1979) of the second of these three anomalies can be assessed, and Acheson's explanation is adapted to the two other anomalies.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 103 , February 1981 , pp. 389 - 412
Copyright
© 1981 Cambridge University Press

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