Center for Environmental and Applied Fluid Mechanics Seminar: Stéphane Zaleski

Description

Stéphane Zaleski, a professor at the University Pierre and Marie Curie, part of the Sorbonne Universities, will be giving a talk entitled "Using Volume-of-Fluid Simulation to Unveil the Statistics of Multiphase Turbulence" as part of a special Center for Environmental and Applied Fluid Mechanics seminar. The seminar will be hosted by Gretar Tryggvason from the Johns Hopkins Department of Mechanical Engineering.

Abstract:

Complex multiphase flows, such as atomizing jets or breaking waves, are posing challenges to our physical understanding of an analysis. They present scaling and universal properties, such as the log-normal distribution of droplet sizes, although a clear mechanism for these properties has not yet been found. Using advanced numerical methodology, it is possible to simulate model flow such as the quasi two-dimensional mixing layer of Hopfinger, Cartellier, et al. to investigate the complex dynamics of waves, sheets, and ligaments that leads to droplet formation. It is difficult to reach ultimate scaling regimes in atomization: the range from the smallest to the largest droplet in the width of the log normal distribution is relatively narrow. How to extend this range will be discussed.