Kink-induced transport and segregation in oscillated granular layers.
We use experiments and molecular dynamics simulations of vertically oscillated granular layers to study horizontal particle segregation induced by a kink (a boundary between domains oscillating out of phase). Counterrotating convection rolls carry the larger particles in a bidisperse layer along the granular surface to a kink, where they become trapped. The convection originates from avalanches that occur inside the layer, along the interface between solidified and fluidized grains. The position of a kink can be controlled by modulation of the container frequency, making possible systematic harvesting of the larger particles.
Moon
Sung Joon
SJ
Center for Nonlinear Dynamics and Department of Physics, University of Texas, Austin, Texas 78712, USA. moon@chaos.utexas.edu
Goldman
Daniel I
DI
Swift
J B
JB
Swinney
Harry L
HL