Stéphane Zaleski
Sorbonne Université
Seminar Information
Engineering Building Unit 2 (EBU2)
Room 479
Seminar Recording Available: Please contact seminar coordinator, Jake Blair at (j1blair@ucsd.edu)
I will explore various aspects of atomization, starting with the simulation and linear stability theory (both spatial and temporal) of two-phase mixing layers. I will show how Volume of Fluid methods coupled with octree Adaptive Mesh Refinement in particular lead to fast and massive computations. I will continue with experiments recently conducted by Pallav Kant, Detlef Lohse and coworkers on an impulsively started shear flow mimicking cough. I will discuss the ``Manifold Death'' method for controlling the perforation of thin sheets in simulations, and show that Manifold Death leads to statistically converged simulations, including the probability distribution function of droplet sizes. I will conclude by discussing the perspectives for very high performance computing of such flows.
Stéphane Zaleski is Professor of Mechanics at Sorbonne Université and member of the “Institut Jean Le Rond d’Alembert”. He spent his early years at the Physics Laboratory of Ecole Normale Supérieure in Paris where he obtained his PhD under the supervision of Yves Pomeau. After three years at the Applied Math group of MIT he joined the Mechanics group at Sorbonne Université. He investigates numerical methods for multiphase flows with applications to atomization, cavitation, porous media flow, nucleate boiling, hydrometallurgy, moving contact lines and droplet impact. Methods include the Volume of Fluid method, the Edge-Based Interface Tracking method and the Diffuse Interface method. He has written several computer codes for the simulation ofmultiphase flow including PARIS Simulator and is involved in the development of the Basilisk platform. He is Associate Editor of J.Comput. Phys. and of Computers and Fluids. He leads the ERC-Advanced project TRUFLOW on mass transfer at large Schmidt numbers and is a member of Institut Universitaire de France.
Awards and honors 2024: Medal of the section of mechanics and informatics of the Paris Academy of Sciences.