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Scaling laws to understand tidal dissipation in fluid planetary layers and stars

Published online by Cambridge University Press:  05 January 2015

Pierre Auclair-Desrotour ,
Stéphane Mathis  and
Christophe Le Poncin-Lafitte
Pierre Auclair-Desrotour
Affiliation:
IMCCE, Observatoire de Paris, CNRS UMR 8028, 77 Avenue Denfert-Rochereau, 75014 Paris, France email: [email protected] Laboratoire AIM Paris-Saclay, CEA/DSM - CNRS - Université Paris Diderot, IRFU/SAp Centre de Saclay, F-91191 Gif-sur-Yvette, France email: [email protected]
Stéphane Mathis
Affiliation:
Laboratoire AIM Paris-Saclay, CEA/DSM - CNRS - Université Paris Diderot, IRFU/SAp Centre de Saclay, F-91191 Gif-sur-Yvette, France email: [email protected] LESIA, Observatoire de Paris, CNRS UMR 8109, UPMC, Univ. Paris-Diderot, 5 place Jules Janssen, 92195 Meudon, France
Christophe Le Poncin-Lafitte
Affiliation:
SYRTE, Observatoire de Paris, CNRS UMR 8630, UPMC, 61 Avenue de l'Observatoire, 75014 Paris, France email: [email protected]
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Abstract

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Tidal dissipation is known as one of the main drivers of the secular evolution of planetary systems. It directly results from dissipative mechanisms that occur in planets and stars' interiors and strongly depends on the structure and dynamics of the bodies. This work focuses on the mechanism of viscous friction in stars and planetary layers. A local model is used to study tidal dissipation. It provides general scaling laws that give a qualitative overview of the different possible behaviors of fluid tidal waves. Furthermore, it highlights the sensitivity of dissipation to the tidal frequency and the roles played by the internal parameters of the fluid such as rotation, stratification, viscosity and thermal diffusivity that will impact the spins/orbital architecture in planetary systems.

Keywords

hydrodynamicswavesturbulenceplanet-star interactions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S310: Complex Planetary Systems , July 2014 , pp. 29 - 32
Copyright
Copyright © International Astronomical Union 2014 

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