9.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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14 papers · 2 filters
Velocity fluctuations and boundary layer structure in a rough Rayleigh-B{é}nard cell filled with water
Olivier Liot, Quentin Ehlinger, Elonore Rusaouën +3
We report Particle Image Velocimetry of the Large Scale Circulation and the viscous boundary layer in turbulent thermal convection. We use two parallelepipedic Rayleigh-B{é}nard ce…
Generalized description of intermittency in turbulence via stochastic methods
J. Friedrich, R. Grauer
We present a generalized picture of intermittency in turbulence that is based on the theory of stochastic processes. To this end, we rely on the experimentally and numerically veri…
Instantons in a Lagrangian model of turbulence
Leonardo S. Grigorio, Freddy Bouchet, Rodrigo M. Pereira +1
The role of instantons is investigated in the Lagrangian model for the velocity gradient evolution known as the Recent Fluid Deformation approximation. After recasting the model in…
Stochastic chaos in a turbulent swirling flow
Davide Faranda, Yuzuru Sato, Brice Saint-Michel +4
We report the experimental evidence of the existence of a random attractor in a fully developed turbulent swirling flow. By defining a global observable which tracks the asymmetry…
Rayleigh-Benard stability and the validity of quasi-Boussinesq or quasi-anelastic liquid approximations
Thierry Alboussiere, Yanick Ricard
The linear stability threshold of the Rayleigh-Benard configuration is analyzed with compressible effects taken into account. It is assumed that the fluid obeys a Newtonian rheolog…
Preferential concentration of inertial sub-kolmogorov particles. The roles of mass loading of particles, Stokes and Reynolds numbers
Sholpan Sumbekova, Alain Cartellier, Alberto Aliseda +1
Turbulent flows laden with inertial particles present multiple open questions and are a subject of great interest in current research. Due to their higher density compared to the c…
A statistical mechanics approach to mixing in stratified fluids
Antoine Venaille, Louis Gostiaux, Joel Sommeria
Predicting how much mixing occurs when a given amount of energy is injected into a Boussinesq fluid is a longstanding problem in stratified turbulence. The huge number of degrees o…
Columnar structure formation of a dilute suspension of settling spherical particles in a quiescent fluid
Sander G. Huisman, Thomas Barois, Mickaël Bourgoin +6
The settling of heavy spherical particles in a column of quiescent fluid is investigated. The performed experiments cover a range of Galileo numbers ()…
Weak links between fast mobility and local structure in molecular and atomic liquids
S. Bernini, F. Puosi, D. Leporini
We investigate by Molecular-Dynamics simulations the fast mobility - the rattling amplitude of the particles temporarily trapped by the cage of the neighbors - in mildly supercoole…
Kinetic theory and quasilinear theories of jet dynamics
F Bouchet, C Nardini, T Tangarife
We review progress that has been made to constructa theory for the jet formation and maintenance in planetary atmospheres. The theory is built in the regime where velocityfluctuati…
Internal wave attractors examined using laboratory experiments and 3D numerical simulations
Christophe Brouzet, Ilias Sibgatullin, H Scolan +2
In the present paper, we combine numerical and experimental approaches to study the dynamics of stable and unstable internal wave attractors. The problem is considered in a classic…
Energy cascade in internal wave attractors
Christophe Brouzet, Evgeny Ermanyuk, Sylvain Joubaud +2
One of the pivotal questions in the dynamics of the oceans is related to the cascade of mechanical energy in the abyss and its contribution to mixing. Here, we propose internal wav…
Zonal flows as statistical equilibria
F Bouchet, Antoine Venaille
Zonal jets are striking and beautiful examples of the propensity for geophysical turbulent flows to spontaneously self-organize into robust, large scale coherent structures. There…
Nonlinear internal wave penetration via parametric subharmonic instability
S. J. Ghaemsaidi, S. Joubaud, T. Dauxois +2
We present the results of a laboratory experimental study of an internal wave field generated by harmonic, spatially-periodic boundary forcing from above of a density stratificatio…