Les activités de l’équipe, à caractère plutôt fondamentales, concernent l’analyse des instabilités hydrodynamiques, la transition laminaire/turbulence, les écoulements turbulents, et les écoulements à petite échelle.
Les actualités de T&I :
ERCOFTAC Workshop at École Centrale de Lyon
Covid 19 flows : study and practical recommendations
Vendredi 5 mars 2021 - 14h - via ZOOM
The ERCOFTAC Pilot Center Henri Bénard organizes its third zoom-meeting on
“COVID19 Flows : Fundamentals and Practical Recommendations”.
The main points in two invited lectures include the new (...)
Article dans Atmosphere (2021)
Correlation between Buoyancy Flux, Dissipation and Potential Vorticity in Rotating Stratified Turbulence
Duane Rosenberg, Annick Pouquet & Raffaele Marino
We study in this paper the correlation between the buoyancy flux, the efficiency of energy dissipation and the linear and nonlinear components of potential vorticity, PV, a point-wise invariant (...)
Article dans Phys. Rev. Fluids (2021)
Mixing and unmixing induced by active camphor particles
Clément Gouiller, Florence Raynal, Laurent Maquet, Mickaël Bourgoin, Cécile Cottin-Bizonne, Romain Volk & Christophe Ybert
Small colloidal floaters are poured at the air-water interface of a tank stirred by many camphor swimmers. The system rapidly reaches a statistically stationary state resulting in the competition (...)
Article dans J. Plasma Phys. (2021)
Local and global properties of energy transfer in models of plasma turbulence
Christian L. Vásconez, D. Perrone, R. Marino, D. Laveder, F. Valentini, S. Servidio, P. Mininni & L. Sorriso-Valvo
The nature of the turbulent energy transfer rate is studied using direct numerical simulations of weakly collisional space plasmas. This is done comparing results obtained from hybrid (...)
Article dans Journal of Instrumentation (2020)
Deep-sea deployment of the KM3NeT neutrino telescope detection units by self-unrolling
S. Aiello, L. Gostiaux, H. Van Haren, et al.
KM3NeT is a research infrastructure being installed in the deep Mediterranean Sea. It will house a neutrino telescope comprising hundreds of networked moorings—detection units or strings—equipped (...)
Article dans Corrosion Science (2020)
Corrosion of T91 and pure iron in flowing and static Pb-Bi alloy between 450 °C and 540 °C : experiments, modelling and mechanism
L. Martinelli, K. Ginestar, V. Botton,C. Delisle & F. Balbaud-Célérier
T91 (Fe-9Cr steel) and pure iron were corroded in pure dissolution domain in liquid lead bismuth eutectic (LBE) from 450 to 540 °C in static and in dynamic LBE flow. The modelling showed that (...)
Article dans Phys. Rev. Fluids (2020)
Three-dimensional effect of high frequency vibration on convection in silicon melt
Faiza Mokhtari, Slim Kaddeche, Daniel Henry, Samia Bouarab, Abdessamed Medelfef & Valéry Botton
The effect of HF vibrations with different orientations on the convective flow in a liquid metal inside a cubic cell heated from the side is investigated using collocation spectral method. The (...)
Article dans Comput. Methods Biomech. Biomed. Eng. (2020)
A phenomenological and multiscale modeling of arterial growth and remodeling under endofibrosis
Jérôme Jansen, Xavier Escriva, Fabien Godeferd & Patrick Feugier
High level endurance sports, like biking, may lead to a vascular pathology called endofibrosis. Its symptoms are an arterial wall thickening and a reduction of the artery lumen calibre. Cyclists (...)
Article dans Comptes Rendus Méc. (2020)
Oblique and streamwise vortex paths in a plane Couette flow using a RNL system
Frédéric Alizard
This paper revisits oblique wave and streamwise vortex scenarios in a plane Couette flow using restricted nonlinear simulations, where only a single Fourier mode for perturbation is retained. It (...)
Article dans Phys. Rev. Fluids (2020)
Signature and energetics of internal gravity waves in stratified turbulence
Andrea Maffioli, Alexandre Delache & Fabien Godeferd
Internal gravity waves propagating within homogeneous stratified turbulence are the subject of the present study. A spatiotemporal analysis is carried out on the results of direct numerical (...)
Article dans Chinese Physics B (2020)
The role of velocity derivative skewness in understanding non-equilibrium turbulence
Feng Liu, Le Fang & Liang Shao
The turbulence governed by the Navier–Stokes equation is paramount in many physical processes. However, it has been considered as a challenging problem due to its inherent nonlinearity, (...)
Article dans J. Fluids Struct. (2020)
New strategy of solid/fluid coupling during numerical simulation of thermo-mechanical processes
Yassine Saadlaoui, Alexandre Delache, Éric Feulvarch, Jean-Baptiste Leblond & Jean-Michel Bergheau
In this study, numerical methods are developed to simulate thermomechanical processes, taking into account both the fluid flows in the molten pool and the deformations of the solid parts. The (...)