We study the free evolution of frictional granular gases using large scale molecular dynamics simulation in three dimensions. The system cools due to solid friction among the interacting particles. At early stages of evolution, the density field remains homogeneous and the velocity field follows the Maxwell-Boltzmann (MB) distribution. However, at later times, the density field shows clustering and the velocity field shows local ordering. The ordering in the velocity field is studied by invoking analogy from phase ordering systems. The equal-time correlation function of velocity field follows dynamical scaling. The correlation length of velocity field, Lv (t), exhibits power law growth: Lv (t) ~ t 1/3.
|Journal||Journal of Physics: Conference Series|
|State||Published - 7 Nov 2017|
|Event||28th Annual IUPAP Conference on Computational Physics, CCP 2016 - Pretoria, South Africa|
Duration: 10 Jul 2016 → 14 Jul 2016