Structure and dynamics of two-dimensional sheared granular flows

Anki Reddy, K. ; Kumaran, V. (2009) Structure and dynamics of two-dimensional sheared granular flows Physical Review E, 79 (6). 061303_1- 061303_20. ISSN 1063-651X

Full text not available from this repository.

Official URL:

Related URL:


The structure and dynamics of the two-dimensional linear shear flow of inelastic disks at high area fractions are analyzed. The event-driven simulation technique is used in the hard-particle limit, where the particles interact through instantaneous collisions. The structure (relative arrangement of particles) is analyzed using the bond-orientational order parameter. It is found that the shear flow reduces the order in the system, and the order parameter in a shear flow is lower than that in a collection of elastic hard disks at equilibrium. The distribution of relative velocities between colliding particles is analyzed. The relative velocity distribution undergoes a transition from a Gaussian distribution for nearly elastic particles, to an exponential distribution at low coefficients of restitution. However, the single-particle distribution function is close to a Gaussian in the dense limit, indicating that correlations between colliding particles have a strong influence on the relative velocity distribution. This results in a much lower dissipation rate than that predicted using the molecular chaos assumption, where the velocities of colliding particles are considered to be uncorrelated.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:18578
Deposited On:17 Nov 2010 09:32
Last Modified:06 Jun 2011 04:32

Repository Staff Only: item control page