Temperature scaling in a dense vibro-fluidised granular material

Details Temperature scaling in a dense vibro-fluidised granular material Temperature scaling in a dense vibro-fluidised granular material

1999-04-16

arxiv.org/abs/cond-mat/9904237v1

Physics

Condensed Matter

Soft Condensed Matter

ReVTeX (psfrag), 5 pages, 5 figures, Submitted to PRE

Scientific paper

10.1103/PhysRevE.60.1951

The leading order "temperature" of a dense two dimensional granular material fluidised by external vibrations is determined. An asymptotic solution is obtained where the particles are considered to be elastic in the leading approximation. The velocity distribution is a Maxwell-Boltzmann distribution in the leading approximation. The density profile is determined by solving the momentum balance equation in the vertical direction, where the relation between the pressure and density is provided by the virial equation of state. The predictions of the present analysis show good agreement with simulation results at higher densities where theories for a dilute vibrated granular material, with the pressure-density relation provided by the ideal gas law, are in error. The theory also predicts the scaling relations of the total dissipation in the bed reported by McNamara and Luding (PRE v 58, p 813).

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