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 …

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 …

Tidally driven dynamos in a rotating sphere

D Cébron, R Hollerbach - The Astrophysical journal letters, 2014 - iopscience.iop.org
Large-scale planetary or stellar magnetic fields generated by a dynamo effect are mostly
attributed to flows forced by buoyancy forces in electrically conducting fluid layers. However …

Fossil field decay due to nonlinear tides in massive binaries

J Vidal, D Cébron, E Alecian - Astronomy & Astrophysics, 2019 - aanda.org
Context. Surface magnetic fields have been detected in 5–10% of isolated massive stars,
hosting outer radiative envelopes. They are often thought to have a fossil origin, resulting …

[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 …

Parametric instability and wave turbulence driven by tidal excitation of internal waves

T Le Reun, B Favier, M Le Bars - Journal of Fluid Mechanics, 2018 - cambridge.org
We investigate the stability of stratified fluid layers undergoing homogeneous and periodic
tidal deformation. We first introduce a local model which allows us to study velocity and …

Inviscid instabilities in rotating ellipsoids on eccentric Kepler orbits

J Vidal, D Cébron - Journal of Fluid Mechanics, 2017 - cambridge.org
We consider the hydrodynamic stability of homogeneous, incompressible and rotating
ellipsoidal fluid masses. The latter are the simplest models of fluid celestial bodies with …

Experimental study of global-scale turbulence in a librating ellipsoid

AM Grannan, M Le Bars, D Cébron, JM Aurnou - Physics of Fluids, 2014 - pubs.aip.org
We present laboratory experimental results demonstrating that librational forcing of an
ellipsoidal container of water can produce intense motions through the mechanism of a …