Search Results - "Le Bars, Michael"

Flows Driven by Libration, Precession, and Tides by Le Bars, Michael, Cébron, David, Le Gal, Patrice

“…Because of gravitational interactions with their companions, the rotational dynamics of planets and stars involve periodic perturbations of their shape, the…”
Get full text

A Laboratory Model for Iron Snow in Planetary Cores by Huguet, Ludovic, Le Bars, Michael, Deguen, Renaud

“…Solidification of the cores of small planets and moons is thought to occur in the “iron snow” regime, in which iron crystals form near the core‐mantle boundary…”
Get full text

Influence of planetary rotation on metal-silicate mixing and equilibration in a magma ocean by Kriaa, Quentin, Landeau, Maylis, Le Bars, Michael

“…At a late stage of its accretion, the Earth experienced high-energy planetary impacts. Following each collision, the metal core of the impactor sank into…”
Get full text

Remote determination of the shape of Jupiter’s vortices from laboratory experiments by Lemasquerier, Daphné, Facchini, Giulio, Favier, Benjamin, Le Bars, Michael

“…Jupiter’s dynamics shapes its cloud patterns but remains largely unknown below this natural observational barrier. Unravelling the underlying three-dimensional…”
Get full text

Surface manifestation of stochastically excited internal gravity waves by Lecoanet, Daniel, Cantiello, Matteo, Anders, Evan H, Quataert, Eliot, Couston, Louis-Alexandre, Bouffard, Mathieu, Favier, Benjamin, Le Bars, Michael

“…ABSTRACT Recent photometric observations of massive stars show ubiquitous low-frequency ‘red noise’ variability, which has been interpreted as internal gravity…”
Get full text

Turbulent Kinematic Dynamos in Ellipsoids Driven by Mechanical Forcing by Reddy, K. Sandeep, Favier, Benjamin, Le Bars, Michael

“…Dynamo action in planetary cores has been extensively studied in the context of convectively driven flows. We show in this letter that mechanical forcings,…”
Get full text

Fluid Dynamics Experiments for Planetary Interiors by Le Bars, Michael, Barik, Ankit, Burmann, Fabian, Lathrop, Daniel P., Noir, Jerome, Schaeffer, Nathanael, Triana, Santiago A.

“…Understanding fluid flows in planetary cores and subsurface oceans, as well as their signatures in available observational data (gravity, magnetism, rotation,…”
Get full text

Elliptical instability in hot Jupiter systems by Cébron, David, Bars, Michael Le, Gal, Patrice Le, Moutou, Claire, Leconte, Jeremy, Sauret, Alban

“…Several studies have already considered the influence of tides on the evolution of systems composed of a star and a close-in companion to tentatively explain…”
Get full text

Shape and size of large-scale vortices: A generic fluid pattern in geophysical fluid dynamics by Couston, Louis-Alexandre, Lecoanet, Daniel, Favier, Benjamin, Le Bars, Michael

“…Planetary rotation organizes fluid motions into coherent, long-lived swirls, known as large-scale vortices (LSVs), which play an important role in the dynamics…”
Get full text

How to anchor hotspots in a convecting mantle? by Davaille, Anne, Girard, Fabien, Le Bars, Michael

“…Laboratory experiments were performed to study the influence of density and viscosity layering on the formation and stability of plumes. Viscosity ratios…”
Get full text

Solidification of a binary alloy: Finite-element, single-domain simulation and new benchmark solutions by Le Bars, Michael, Worster, M. Grae

“…A finite-element simulation of binary alloy solidification based on a single-domain formulation is presented and tested. Resolution of phase change is first…”
Get full text

Numerical study of the McIntyre instability around Gaussian floating vortices in thermal wind balance by Bars, Michael Le

“…Phys. Rev. Fluids 6, 093801, 2021 The visco-diffusive McIntyre instability (McIntyre 1970) has been suggested as a possible source for density layer formation…”
Get full text

Zonal jets experiments in the gas giants' zonostrophic regime by Lemasquerier, Daphné, Favier, Benjamin, Bars, Michael Le

“…Intense east-west winds called zonal jets are observed in the atmospheres of Jupiter and Saturn and extend in their deep interior. We present experimental…”
Get full text

Effects of particle size and background rotation on the settling of particle clouds by Kriaa, Quentin, Subra, Eliot, Favier, Benjamin, Bars, Michael Le

“…Physical Review Fluids, 2022, 7 (12), pp.124302 We experimentally investigate the behaviour of instantaneous localised releases of heavy particles falling as…”
Get full text

Gas giant-like zonal jets in the laboratory by Lemasquerier, Daphné, Favier, Benjamin, Bars, Michael Le

“…Physical Review Fluids, 5(11), 110506 (2020) This paper is associated with a poster winner of a 2019 American Physical Society Division of Fluid Dynamics (DFD)…”
Get full text

Multi-modal excitation to model the Quasi-Biennial Oscillation by Léard, Pierre, Lecoanet, Daniel, Bars, Michael Le

“…The Quasi-Biennial Oscillation (QBO) of stratospheric winds is the most striking example of mean-flow generation and reversal by the non-linear interactions of…”
Get full text

Zonal jets at the laboratory scale: hysteresis and Rossby waves resonance by Lemasquerier, Daphné, Favier, Benjamin, Bars, Michael Le

“…Journal of Fluid Mechanics, 910, A18 (2021) The dynamics, structure and stability of zonal jets in planetary flows are still poorly understood, especially in…”
Get full text

The deep Earth may not be cooling down by Andrault, Denis, Monteux, Julien, Le Bars, Michael, Samuel, Henri

“…The Earth is a thermal engine generating the fundamental processes of geomagnetic field, plate tectonics and volcanism. Large amounts of heat are permanently…”
Get full text

Inertial Wave Turbulence Driven by Elliptical Instability by Le Reun, Thomas, Favier, Benjamin, Barker, Adrian J, Le Bars, Michael

“…The combination of elliptical deformation of streamlines and vorticity can lead to the destabilization of any rotating flow via the elliptical instability…”
Get full text

Experimental study of the non-linear saturation of the elliptical instability: inertial wave turbulence versus geostrophic turbulence by Reun, Thomas Le, Favier, Benjamin, Bars, Michael Le

“…Journal of Fluid Mechanics, 879, 296-326 (2019) In this paper, we present an experimental investigation of the turbulent saturation of the flow driven by…”
Get full text