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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16 papers · 2 filters
The Lundgren-Monin-Novikov Hierarchy: Kinetic Equations for Turbulence
R. Friedrich, A. Daitche, O. Kamps +3
We present an overview of recent works on the statistical description of turbulent flows in terms of probability density functions (PDFs) in the framework of the Lundgren-Monin-Nov…
The Equivalence of the Lagrangian-Averaged Navier-Stokes-α Model and the Rational LES model in Two Dimensions
Balasubramanya T. Nadiga, Freddy Bouchet
In the Large Eddy Simulation (LES) framework for modeling a turbulent flow, when the large scale velocity field is defined by low-pass filtering the full velocity field, a Taylor s…
Reflections on dissipation associated with thermal convection
Thierry Alboussiere, Yanick Ricard
This paper was originally published in June 2013 in JFM (vol. 725). There was one result concerning an expression of viscous dissipation in convective flows and a second result on…
Characterizing flows with an instrumented particle measuring Lagrangian accelerations
Robert Zimmermann, Lionel Fiabane, Yoann Gasteuil +2
We present in this article a novel Lagrangian measurement technique: an instrumented particle which continuously transmits the force/acceleration acting on it as it is advected in…
Measuring Lagrangian accelerations using an instrumented particle
Robert Zimmermann, Lionel Fiabane, Yoann Gasteuil +2
Accessing and characterizing a flow impose a number of constraints on the employed measurement techniques; in particular optical methods require transparent fluids and windows in t…
On the clustering of finite-size particles in turbulence
Lionel Fiabane, Robert Zimmermann, Romain Volk +2
We investigate experimentally the spatial distributions of heavy and neutrally buoyant particles of finite size in a fully turbulent flow. As their Stokes number (i.e. ratio of the…
Resonant Triad Instability in Stratified Fluids
Sylvain Joubaud, James Munroe, Philippe Odier +1
Internal gravity waves contribute to fluid mixing and energy transport, not only in oceans but also in the atmosphere and in astrophysical bodies. We provide here the first experim…
Corrugated interfaces in multiphase core-annular flow
Ho Cheung Shum, Alban Sauret, Alberto Fernandez-nieves +2
Microfluidic devices can be used to produce highly controlled and monodisperse double or multiple emulsions. The presence of inner drops inside a jet of the middle phase introduces…
Tetrahedron deformation and alignment of perceived vorticity and strain in a turbulent flow
Alain Pumir, Eberhard Bodenschatz, Haitao Xu
We describe the structure and dynamics of turbulence by the scale-dependent perceived velocity gradient tensor as supported by following four tracers, i.e. fluid particles, that in…
Experimental observation of a strong mean flow induced by internal gravity waves
Guilhem Bordes, Antoine Venaille, Sylvain Joubaud +2
We report the experimental observation of a robust horizontal mean flow induced by internal gravity waves. A wave beam is forced at the lateral boundary of a tank filled with a lin…
Bottom-trapped currents as statistical equilibrium states above topographic anomalies
Antoine Venaille
Oceanic geostrophic turbulence is mostly forced at the surface, yet strong bottom-trapped flows are commonly observed along topographic anomalies. Here we consider the case of a fr…
Energy cascade and the four-fifths law in superfluid turbulence
Julien Salort, Benoît Chabaud, Emmanuel Lévêque +1
The 4/5-law of turbulence, which characterizes the energy cascade from large to small-sized eddies at high Reynolds numbers in classical fluids, is verified experimentally in a sup…
Turbulent velocity spectra in superfluid flows
J. Salort, C. Baudet, B. Castaing +12
We present velocity spectra measured in three cryogenic liquid 4He steady flows: grid and wake flows in a pressurized wind tunnel capable of achieving mean velocities up to 5 m/s a…
Mesoscale Equipartition of kinetic energy in Quantum Turbulence
Julien Salort, Philippe-E. Roche, Emmanuel Lévêque
The turbulence of superfluid helium is investigated numerically at finite temperature. Direct numerical simulations are performed with a "truncated HVBK" model, which combines the…
Do finite size neutrally buoyant particles cluster?
Lionel Fiabane, Romain Volk, Jean-Francois Pinton +3
We investigate the preferential concentration of particles which are neutrally buoyant but with a diameter significantly larger than the dissipation scale of the carrier flow. Such…
The catalytic role of beta effect in barotropization processes
Antoine Venaille, Geoffrey K. Vallis, S. M. Griffies
The vertical structure of freely evolving, continuously stratified, quasi-geostrophic flow is investigated. We predict the final state organization, and in particular its vertical…