Flows driven by libration, precession, and tides

M Le Bars, D Cébron, P Le Gal - Annual Review of Fluid …, 2015 - annualreviews.org
Because of gravitational interactions with their companions, the rotational dynamics of
planets and stars involve periodic perturbations of their shape, the direction of their …

[HTML][HTML] Fluid dynamics experiments for planetary interiors

M Le Bars, A Barik, F Burmann, DP Lathrop, J Noir… - Surveys in …, 2022 - Springer
Understanding fluid flows in planetary cores and subsurface oceans, as well as their
signatures in available observational data (gravity, magnetism, rotation, etc.), is a …

Inertial wave turbulence driven by elliptical instability

T Le Reun, B Favier, AJ Barker, M Le Bars - Physical Review Letters, 2017 - APS
The combination of elliptical deformation of streamlines and vorticity can lead to the
destabilization of any rotating flow via the elliptical instability. Such a mechanism has been …

Libration‐driven flows in ellipsoidal shells

D Lemasquerier, AM Grannan, J Vidal… - Journal of …, 2017 - Wiley Online Library
Planets and satellites can undergo physical librations, which consist of forced periodic
variations in their rotation rate induced by gravitational interactions with nearby bodies. This …

Experimental study of the nonlinear saturation of the elliptical instability: inertial wave turbulence versus geostrophic turbulence

T Le Reun, B Favier, M Le Bars - Journal of Fluid Mechanics, 2019 - cambridge.org
In this paper, we present an experimental investigation of the turbulent saturation of the flow
driven by the parametric resonance of inertial waves in a rotating fluid. In our set-up, a half …

Internal shear layers in librating spherical shells: the case of periodic characteristic paths

J He, B Favier, M Rieutord, S Le Dizès - Journal of Fluid Mechanics, 2022 - cambridge.org
Internal shear layers generated by the longitudinal libration of the inner core in a spherical
shell rotating at a rate for the amplitudes of the main and secondary beams, respectively, are …

[HTML][HTML] The physical oceanography of ice-covered moons

KM Soderlund, M Rovira-Navarro… - Annual Review of …, 2024 - annualreviews.org
In the outer solar system, a growing number of giant planet satellites are now known to be
abodes for global oceans hidden below an outer layer of ice. These planetary oceans are a …

[HTML][HTML] Generation and maintenance of bulk turbulence by libration-driven elliptical instability

B Favier, AM Grannan, M Le Bars, JM Aurnou - Physics of Fluids, 2015 - pubs.aip.org
Longitudinal libration corresponds to the periodic oscillation of a body's rotation rate and is,
along with precessional and tidal forcings, a possible source of mechanically-driven …

Mean zonal flows induced by weak mechanical forcings in rotating spheroids

D Cébron, J Vidal, N Schaeffer, A Borderies… - Journal of Fluid …, 2021 - cambridge.org
The generation of mean flows is a long-standing issue in rotating fluids. Motivated by
planetary objects, we consider here a rapidly rotating fluid-filled spheroid, which is subject to …

Can libration maintain Enceladus's ocean?

A Wilson, RR Kerswell - Earth and Planetary Science Letters, 2018 - Elsevier
The process by which the subsurface ocean on Enceladus is heated remains a puzzle. Tidal
interaction with Saturn and Dione is the leading candidate but whether the dominant heating …