Turbulent aerosols
Orateur : Bernhard Mehlig
Department of Physics, University of Gothenburg, Sweden
Résumé : Heavy particles suspended in an incompressible turbulent flow form a ‘turbulent aerosol’. When the inertia of the particles is significant then the particles respond in intricate ways to the turbulent fluctuations of the carrying fluid : independent particles may cluster together and form spatial patterns even though the fluid is incompressible, and the relative speeds of nearby particles may fluctuate strongly. Both phenomena depend sensitively on the inertia of the particles, and both phenomena affect collision rates and collision outcomes, and thus the long-term fate of the turbulent aerosol. In recent years it has become clear that important aspects of the dynamics of turbulent aerosols can be understood in terms of statistical models. In this talk I describe how statistical-model calculations have led to a detailed understanding of the mechanisms that determine heavy-particle dynamics in turbulent aerosols.
Date et lieu : le Mardi 5 Juillet 2016 à 11h, salle 250, IUSTI