סמינר-מחלקתי-ביה"ס-להנדסה-מכאנית-Prof. Bernhard Mehlig

School of Mechanical Engineering Seminar
Monday, January 9, 2016 at 15:00
Wolfson Building of Mechanical Engineering, Room 206

STATISTICAL MODELS FOR TURBULENT AEROSOLS

Professor Bernhard Mehlig
Department of Physics
University of Gothenburg
Sweden

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, 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.

‏