15th European Turbulence Conference 2015
August 25-28th, 2015, Delft, The Netherlands

Invited speakers:


Prof. Marc Brachet. Ecole Normale Superieure, Paris, France

Prof. Peter G. Frick, Institute of Continuous Media Mechanics, Perm, Russia

Prof. Bettina Frohnapfel,  Karlsruher Institut fur Technology, Germany

Prof. Andrea Mazzino, Dipartimento di Fisica, University of Genova, Italy

Prof. Bernhard Mehlig. Department of Physics, University of Gothenburg, Sweden

Prof. Lex Smits, Mechanical and Aerospace Engineering, Princeton University, USA

Prof. Chao Sun Physics of Fluids, University of Twente, The Netherlands

Prof. Steve Tobias, Applied Mathematics, University of Leeds, United Kingdom





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13:30   Invited Lecture: Prof. Bernhard Mehlig, "Statistical Models for Turbulent Aerosols"
Chair: Eberhard Bodenschatz
13:30
60 mins
STATISTICAL MODELS FOR TURBULENT AEROSOLS
Bernhard Mehlig
Abstract: Heavy particles suspended in an incompressible randomly mixing or 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 inertial-particle dynamics in turbulent aerosols.