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Instability of the symmetric Couette-flow in a granular gas: hydrodynamic field profiles and transport | | M. Sasvari
; J. Kertesz
; D. E. Wolf
; | | Date: |
5 Jun 2000 | | Subject: | Soft Condensed Matter | cond-mat.soft | | Affiliation: | 1,2), J. Kertesz , D. E. Wolf ( Budapest University of Technology and Economics, University Duisburg | | Abstract: | We investigate 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 condition of the particle places and velocities and an asymmetric stationary state, where the deviation from (anti)symmetric hydrodynamic fields is stronger as the normal restitution coefficient decreases. For the better understanding of this sensitivity we carried out a linear stability analysis of the former kinetic theoretical solution [Jenkins and Richman: J. Fluid. Mech. {f 171} (1986)] and found it to be unstable. The effect of this asymmetry on the self-diffusion coefficient is also discussed. | | Source: | arXiv, cond-mat/0006066 | | Services: | Forum | Review | PDF | Favorites | |
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