Free cooling and inelastic collapse of granular gases in high dimensions

Details Free cooling and inelastic collapse of granular gases in high dimensions Free cooling and inelastic collapse of granular gases in high dimensions

2000-06-07

arxiv.org/abs/cond-mat/0006106v1

Eur. Phys. J. E. 3, 291 (2000)

Physics

Condensed Matter

Statistical Mechanics

6 pages, 6 figures (7 postscript files), submitted to EPJE

Scientific paper

10.1007/s101890070021

The connection between granular gases and sticky gases has recently been considered, leading to the conjecture that inelastic collapse is avoided for space dimensions higher than 4. We report Molecular Dynamics simulations of hard inelastic spheres in dimensions 4, 5 and 6. The evolution of the granular medium is monitored throughout the cooling process. The behaviour is found to be very similar to that of a two-dimensional system, with a shearing-like instability of the velocity field and inelastic collapse when collisions are inelastic enough, showing that the connection with sticky gases needs to be revised.

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