abstract

• We present results from a detailed simulation of a quasi-two-dimensional dissipative granular gas, kept in a noncondensed steady state via vertical shaking over a rough substrate. This gas shows a weak power-law decay in the tails of its pair distribution functions, indicating clustering. This clustering depends monotonically on the dissipation coefficient and disappears when the sphere-sphere collisions are conservative. Clustering is also sensitive to the packing fraction. This gas also displays the standard nonequilibrium characteristics of similar systems, including non-Maxwellian velocity distributions. The diffusion coefficients are calculated over all the conditions of the simulations, and it is found that diluted gases are more diffusive for smaller restitution coefficients. © 2010 The American Physical Society.

authors

• Nahmad Molinari Yuri
• Perera-Burgos J.A.
• Pérez-Ángel G.

publication date

• 2010-01-01

published in

• Physical Review E - Statistical, Nonlinear, and Soft Matter Physics  Journal

keywords

• Diffusion Coefficients; Diffusivities; Dissipation coefficients; Granular gas; Maxwellian velocity distributions; Non equilibrium; Packing fractions; Pair distribution functions; Power law decay; Restitution coefficient; Rough substrates; Steady state; Gases; Granular materials; Spheres; Two dimensional; Distribution functions

Digital Object Identifier (DOI)

• 10.1103/PhysRevE.82.051305

start page

end page

volume

• 82

issue

• 5