Time resolved particle dynamics in granular convection

Abstract

We present an experimental study of the movement of individual particles in a layer of vertically shaken granular material. High-speed imaging allows us to investigate the motion of beads within one vibration period. This motion consists mainly of vertical jumps, and a global ordered drift. The analysis of the system movement as a whole reveals that the observed bifurcation in the flight time is not adequately described by the Inelastic Bouncing Ball Model. Near the bifurcation point, friction plays and important role, and the branches of the bifurcation do not diverge as the control parameter is increased. We quantify the friction of the beads against the walls, showing that this interaction is the underlying mechanism responsible for the dynamics of the flow observed near the lateral wall.

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• Shocks in Vertically Oscillated Granular Layers
• Thermal convection in fluidized granular systems
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Cited by in corpus (5)

• Nonlinear dynamic analysis of an optimal particle damper
• Bouncing trimer: a random self-propelled particle, chaos and periodical motions
• Scaling of convective velocity in a vertically vibrated granular bed
• Geometry-controlled phase transition in vibrated granular media
• Effect of lateral confinement on the apparent mass of particle dampers