Stratified horizontal flow in vertically vibrated granular layers - art. no. 011304

A layer of granular material on a vertically vibrating sawtooth-shaped base exhibits horizontal how whose speed and direction depend on the parameters specifying the system in a complex manner. Discrete-particle simulations r eveal that the induced flow rate varies with height within the granular lay er and oppositely directed flows can occur at different levels. The behavio r of the overall flow is readily understood once this feature is taken into account.