Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR3.4k papers
- Lyon 1 UniversitéFR2k papers
- Centre de Recherche Astrophysique de LyonFR1.3k papers
- Laboratoire de Physique de l'ENS de LyonFR1.3k papers
- Université de LyonFR537 papers
- Unité de Mathématiques Pures et AppliquéesFR399 papers
- European Southern ObservatoryCL328 papers
- Laboratoire de l'Informatique du ParallélismeFR328 papers
- Sorbonne UniversitéFR283 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR269 papers
- Université Grenoble AlpesFR236 papers
- Institut national de recherche en sciences et technologies du numériqueFR233 papers
10 papers · 2 filters
Modeling the pressure Hessian and viscous Laplacian in Turbulence: comparisons with DNS and implications on velocity gradient dynamics
L. Chevillard, C. Meneveau, L. Biferale +1
Modeling the velocity gradient tensor A along Lagrangian trajectories in turbulent flow requires closures for the pressure Hessian and viscous Laplacian of A. Based on an Eulerian-…
Polymer and surface roughness effects on the drag crisis for falling spheres
Nicolas Lyotard, Woodrow Shew, Lydéric Bocquet +1
We make time resolved velocity measurements of steel spheres in free fall through liquid using a continuous ultrasound technique. We explore two different ways to induce large chan…
Measurement of particle and bubble accelerations in turbulence
Romain Volk, Nicolas Mordant, Gautier Verhille +1
We use an extended laser Doppler technique to track optically the velocity of individual particles in a high Reynolds number turbulent flow. The particle sizes are of the order of…
Subcritical dynamo bifurcation in the Taylor Green flow
Yannick Ponty, Jean-Phillipe Laval, Berengere Dubrulle +2
We report direct numerical simulations of dynamo generation for flow generated using a Taylor-Green forcing. We find that the bifurcation is subcritical, and show its bifurcation d…
Lagrangian temperature, velocity and local heat flux measurement in Rayleigh-Benard convection
Yoann Gasteuil, Woodrow Shew, Mathieu Gibert +3
We have developed a small, neutrally buoyant, wireless temperature sensor. Using a camera for optical tracking, we obtain simultaneous measurements of position and temperature of t…
Matrix Exponential-Based Closures for the Turbulent Subgrid-Scale Stress Tensor
Yi Li, Laurent Chevillard, Gregory Eyink +1
Two approaches for closing the turbulence subgrid-scale stress tensor in terms of matrix exponentials are introduced and compared. The first approach is based on a formal solution…
An instrumented tracer for Lagrangian measurements in Rayleigh-Bénard convection
Woodrow L. Shew, Yoann Gasteuil, Mathieu Gibert +2
We have developed novel instrumentation for making Lagrangian measurements of temperature in diverse fluid flows. A small neutrally buoyant capsule is equipped with on-board electr…
Estimating Intermittency Exponent in Neutrally Stratified Atmospheric Surface Layer Flows: A Robust Framework based on Magnitude Cumulant and Surrogate Analyses
Sukanta Basu, Efi Foufoula-Georgiou, Bruno Lashermes +1
This study proposes a novel framework based on magnitude cumulant and surrogate analyses to reliably detect and estimate the intermittency coefficient from short-length coarse-reso…
Magnetic field reversals in an experimental turbulent dynamo
M. Berhanu, R. Monchaux, S. Fauve +11
We report the first experimental observation of reversals of a dynamo field generated in a laboratory experiment based on a turbulent flow of liquid sodium. The magnetic field rand…
Generation of magnetic field by dynamo action in a turbulent flow of liquid sodium
R. Monchaux, M. Berhanu, M. Bourgoin +13
We report the observation of dynamo action in the VKS experiment, i.e., the generation of magnetic field by a strongly turbulent swirling flow of liquid sodium. Both mean and fluct…