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SUMMARY:Granular and particle-laden flow: Novel approaches and application
 s to address grand challenges  - Nathalie Vriend - BPI and Univeristy of C
 ambridge
DTSTART:20191016T150000Z
DTEND:20191016T160000Z
UID:TALK131287@talks.cam.ac.uk
CONTACT:Jenny Jenkins
DESCRIPTION:A granular material forms a distinct and fascinating phase in 
 physics -- sand acts as a fluid as grains flow through your fingers\, the 
 fallen grains form a solid heap on the floor or may suspend in the wind li
 ke a gas. \n\nThe main challenge of studying granular materials is the dev
 elopment of constitutive models valid across scales\, from the micro-scale
  (collisions between individual particles)\, via the meso-scale (flow stru
 ctures inside avalanches) to the macro-scale (dunes\, heaps\, chute flows)
 . When the particles are suspended in a fluid\, forming a multiphase flow\
 , physical laws are more complicated with additional influences and feedba
 ck effects. \n\nIn this presentation\, I will introduce novel research on 
 (1) avalanches\, where we focus on the particle-particle interaction using
  photoelasticity\, and (2) bedform dynamics\, where we explore dune intera
 ction and migration in an aqueous system. 
LOCATION:Marine/Wolfson Building lecture hall\, Bullard Labs.
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