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Convection induced by centrifugal buoyancy

Published online by Cambridge University Press:  29 March 2006

F. H. Busse  and
C. R. Carrigan
F. H. Busse
Affiliation:
Department of Planetary and Space Science, University of California, Los Angeles
C. R. Carrigan
Affiliation:
Department of Planetary and Space Science, University of California, Los Angeles
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Abstract

The onset of convection is observed in a cylindrical annulus which is heated from the outside, cooled from the inside and rotating about its vertical axis of symmetry. The dynamical constraint exerted by the dominating Coriolis force inhibits the instability when the top and bottom boundaries of the annulus are conical so as to make the vertical height vary with distance from the axis. The experimental observations are in good agreement with the theoretical predictions by Busse (1970a). This confirmation indicates the absence of subcritical finite amplitude instabilities and suggests that the annulus experiment provides a close dynamical model for convection in the liquid core of the earth.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 62 , Issue 3 , 11 February 1974 , pp. 579 - 592
Copyright
© 1974 Cambridge University Press

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References

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