Work

Model for collisions in granular gases

Year: 1996

Type: article

Abstract: We propose a model for collisions between particles of a granular material and calculate the restitution coefficients for the normal and tangential motion as functions of the impact velocity from considerations of dissipative viscoelastic collisions. Existing models of impact with dissipation as well as the classical Hertz impact theory are included in the present model as special cases. We find that the type of collision (smooth, reflecting or sticky) is determined by the impact velocity and by the surface properties of the colliding grains. We observe a rather nontrivial dependence of the tangential restitution coefficient on the impact velocity. \textcopyright{} 1996 The American Physical Society.

Source: Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

DOI: 10.1103/physreve.53.5382

Authors: Nikolai V. Brilliantov, Frank Spahn, Jan-Martin Hertzsch, Thorsten Pöschel

Institutions: Lomonosov Moscow State University, University of Potsdam, Humboldt-Universität zu Berlin

Language: English

Topic: Granular flow and fluidized beds

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1996807344

FWCI: 15.17

Cites: 55

Cited by: 908

Related to: 10