EAS Publications Series
Volume 29, 2008Tidal Effects in Stars, Planets and Disks
|Page(s)||127 - 147|
|Published online||20 June 2008|
M.-J. Goupil and J.-P. Zahn (eds)
EAS Publications Series, 29 (2008) 127-147
The dynamics of rotating fluids and binary stars
Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées, UMR 5572, CNRS et Université Paul Sabatier, 14 avenue E. Belin, 31400 Toulouse, France
In this lecture I try to explain the basic concepts related to fluid motions when a background rotation dominates the flows. In particular, the notions of geostrophic flow, Ekman layer, Ekman circulation are explained. However, the main focus of this lecture is on the eigenmodes which occur in such a context and I emphasize here the special effects conveyed to inertial and gravito-inertial modes by the hyperbolic nature of the governing operators. A final section introduces the case of the elliptic instability which I recently suggested as one of the processes of binary synchronization.
© EAS, EDP Sciences, 2008
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