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Stratified precessional flow in spherical geometry

Published online by Cambridge University Press:  08 February 2013

Xing Wei  and
Andreas Tilgner
Xing Wei*
Affiliation:
Institute of Geophysics, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
Andreas Tilgner
Affiliation:
Institute of Geophysics, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
*
†Email address for correspondence: Xing.Wei@phys.uni-goettingen.de
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Abstract

We investigate numerically, in spherical geometry, the interaction of stratification with precession. Both stable stratification and unstable stratification are studied. In the parameter regime we are concerned with, stable stratification suppresses the precessional instability, whereas unstable stratification and precession can either stabilize or destabilize each other at different precession rates.

JFM classification

Geophysical and Geological Flows: Geophysical and Geological Flows Geophysical and Geological Flows: Rotating flows Geophysical and Geological Flows: Stratified flows
Type
Rapids
Information
Journal of Fluid Mechanics , Volume 718 , 10 March 2013 , R2
Copyright
©2013 Cambridge University Press

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