Dynamics of Vibrated Granular Monolayers

Abstract

We study statistical properties of vibrated granular monolayers using molecular dynamics simulations. We show that at high excitation strengths, the system is in a gas state, particle motion is isotropic, and the velocity distributions are Gaussian. As the vibration strength is lowered the system's dimensionality is reduced from three to two. Below a critical excitation strength, a gas-cluster phase occurs, and the velocity distribution becomes bimodal. In this phase, the system consists of clusters of immobile particles arranged in close-packed hexagonal arrays, and gas particles whose energy equals the first excited state of an isolated particle on a vibrated plate.

4 pages, 6 figs, revtex

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• Forcing and Velocity Correlations in a Vibrated Granular Monolayer
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• Scaling, Multiscaling, and Nontrivial Exponents in Inelastic Collision Processes
• Model of coarsening and vortex formation in vibrated granular rods
• Coarsening of granular clusters: two types of scaling behaviors
• Oscillatory instability in a driven granular gas
• Effect of inelasticity on the phase transitions of a thin vibrated granular layer
• Roles of energy dissipation in a liquid-solid transition of out-of-equilibrium systems
• A molecular dynamics "Maxwell Demon" experiment for granular mixtures
• Dynamics of an Inelastic Gravitational Billiard with Rotation
• Diffusivity and Weak Clustering in a Quasi 2D Granular Gas
• Non-equilibrium steady states, coexistence and criticality in driven quasi-two-dimensional granular matter
• Effective potentials in a bidimensional vibrated granular gas
• Dynamic Modeling and Simulation of a Real World Billiard
• Ballistic propagation of density correlations and excess wall forces in quenched granular media
• Noise induces rare events in granular media
• State-dependent driving: A route to non-equilibrium stationary states