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SUMMARY:Granular flows from a continuum point of view
DTSTART:20140218T110000
DTEND:20140218T120000
DTSTAMP:20260510T032031Z
UID:733cf46c1bc513e31135bdabcb2584cbe168158364b01da2b52b5bed
CATEGORIES:Conferences - Seminars
DESCRIPTION:Pierre-Yves Lagrée - CNRS d'Alembert UPMC\, Paris\nGranular m
 atter (sand\, rocks\, gravels...) flows like a viscous fluid or resists to
  shear stress like a solid. It evolves from one state to the other over a 
 distance typically of a few grain diameters.\nHere we adopt the fluid poin
 t of view and discribe granular matter as a continuum media with the so ca
 lled µ(I) rheology: it is a plastic rheology were the normal and shear st
 ress are proportional (Coulomb friction law).\nThis non newtonian rheology
  is implemented in a 2D Navier-Stokes solver (Gerris). Moreover\, comparis
 on with Contact Dynamics simulations (the displacement of all the grains i
 s computed) and experiments show the reliability of the μ(I)-rheology whe
 n modeling complex flow of granular matter in cases of avalanche flows (Ba
 gnold flow)\, collapse of columns and flow in hourglass.
LOCATION:ME B1 10 http://plan.epfl.ch/?room=MEB110
STATUS:CONFIRMED
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