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SUMMARY: Turbulence modeling of strongly-coupled gas-particle flows  -  Je
 sse Capecelatro\, University of Michigan\, USA
DTSTART:20210430T150000Z
DTEND:20210430T153000Z
UID:TALK160207@talks.cam.ac.uk
CONTACT:Deryck Thake
DESCRIPTION:Many natural and industrial processes involve the flow of soli
 d particles or liquid droplets whose dynamical evolution are intimately co
 upled with a carrier gas. A peculiar behavior of such flows is their abili
 ty to give rise to large-scale structures (hundreds to thousands of times 
 the size of individual particles)\, from dense clusters to nearly-particle
 -free voids. Seminal works by G.K. Batchelor has provided theoretical esti
 mates describing the motion of collections of particles suspended in visco
 us flows and the notion of hindered settling under gravity. In this talk I
  will describe how at moderate Reynolds numbers and concentrations\, momen
 tum exchange between the phases results in enhanced settling and the gener
 ation of turbulence in the carrier phase. High-resolution simulations will
  be presented to reveal how multiphase interactions at the particle scale 
 augment or restrict large-scale flow processes\, and provide unique insigh
 t into the budget of turbulent kinetic energy. Finally\, a new data-driven
  framework will be presented for model closure of the averaged two-phase f
 low equations. 
LOCATION:GKB 100 Fluid Mechanics Webinar Series
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