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Molecular dynamics simulations of hard sphere granular particles

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  • Hong, D.C.
  • McLennan, J.A.

Abstract

We use molecular dynamics to study the two dimensional granular flow of particles that interact with each other via a hard sphere potential with inelastic collisions characterized by a coefficient of restitution. The particles are confined in a two dimensional box that contains a hole at the bottom through which particles flow under the influence of gravity. The particles develop coherent flow patterns that look similar to those seen in observations of real granular flow. The velocities of discharging particles through the hole is independent of the depth. We also study the fluidization of the granular particles that sets in when the bottom wall undergoes harmonic oscillation. The dense hard spehere gas is found to reproduce many of the unique features of the granular flow.

Suggested Citation

  • Hong, D.C. & McLennan, J.A., 1992. "Molecular dynamics simulations of hard sphere granular particles," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 187(1), pages 159-171.
    • Handle: RePEc:eee:phsmap:v:187:y:1992:i:1:p:159-171
    DOI: 10.1016/0378-4371(92)90416-N
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    Cited by:

    1. Buchholtz, Volkhard & Pöschel, Thorsten, 1994. "Numerical investigations of the evolution of sandpiles," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 202(3), pages 390-401.
    2. Ruskin, H.J. & McCarren, A.L., 1994. "Size effects of slope dynamics in a 2-dimensional sandpile," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 207(4), pages 477-482.

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