Sasvari, Marton; Kertesz, Janos; Wolf, Dietrich:
Instability of symmetric Couette flow in a granular gas: Hydrodynamic field profiles and transport
In: Physical Review E : Statistical, nonlinear, and soft matter physics, Vol. 62 (2000), No. 3, pp. 3817 - 3825
2000article/chapter in journal
Physics (incl. Astronomy)
Related: 1 publication(s)
Title:
Instability of symmetric Couette flow in a granular gas: Hydrodynamic field profiles and transport
Author:
Sasvari, Marton;Kertesz, Janos;Wolf, DietrichUDE
GND
1273280393
LSF ID
1114
Other
connected with university
Year of publication:
2000

Abstract:

We investigated the inelastic hard-disk gas sheared by two parallel bumpy walls (Couette flow). In our molecular dynamic simulations we found a sensitivity to the asymmetries of the initial particle positions and velocities and an asymmetric stationary state, where the deviation from (anti)symmetric hydrodynamic fields is stronger as the normal restitution coefficient decreases. For better understanding of this sensitivity we carried out a linear stability analysis of the former kinetic theoretical solution [J. T. Jenkins and M. W. Richman, J. Fluid. Mech. 171, 53 (1986)] and found it to be unstable. The effect of this asymmetry on the self-diffusion coefficient is also discussed.