27 janvier 2022

Webinar Léonie Canet

Leonie Canet obtained a PhD in Paris in 2004. Then she joined the University of Manchester as post-doc, with Mike Moore, and then the CEA Saclay, with H. Chaté, J.P. Bouchaud and G. Biroli. She was recruited as assistant Professor in 2006 at University Grenoble Alpes. She became full professor in the same university in 2019. She works mainly on statistical physics of non-equilibrium systems (stochastic interface growth, turbulence, driven-dissipative Bose-Einstein condensates). Leonie Canet is member of the "Institut Universitaire de France" since 2019 and obtained the CNRS "Médaille de Bronze" in 2018.
Lagrangian investigation of diffusion and entrainment in a self-similar turbulent jet

Abstract: The aim of this talk is to give an overview of the results which can be obtained on the statistical properties of a classical turbulent fluid using Functional Renormalization Group (FRG). I will focus on isotropic, homogeneous and stationary turbulence in incompressible flows, and also passive scalar turbulence. While much effort has been devoted to characterising equal-time properties of the turbulent state, less is known about its temporal behaviour. I will present some analytical results from FRG on the time dependence of generic n-point correlation functions of the turbulent fluid and advected scalars. These results are obtained from first principles, i.e. starting from the Navier-Stokes equation, and advection-diffusion equation for the passive scalar, and are asymptotically exact in the limit of large wave-numbers. I will compare these predictions with available results from both direct numerical simulations and experiments.

27 janvier 2022, 16h3017h30
Please contact F. Romano or J-P Laval for the link