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The dynamics of rotating fluids and binary stars

Published online by Cambridge University Press:  20 June 2008

M.-J. Goupil ,
J.-P. Zahn  and
M. Rieutord
M. Rieutord*
Affiliation:
Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées, UMR 5572, CNRS et Université Paul Sabatier, 14 avenue E. Belin, 31400 Toulouse, France
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Abstract

In this lecture I try to explain the basic concepts related to fluidmotions when a background rotation dominates the flows.In particular, the notions of geostrophic flow, Ekman layer, Ekmancirculation are explained. However, the main focus of this lecture is onthe eigenmodes which occur in such a context and I emphasize here thespecial effects conveyed to inertial and gravito-inertial modesby the hyperbolic nature of the governing operators. A final sectionintroduces the case of the elliptic instability which I recentlysuggested as one of the processes of binary synchronization.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 29: Tidal Effects in Stars, Planets and Disks , 2008 , pp. 127 - 147
Copyright
© EAS, EDP Sciences, 2008

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