Transient structures in a granular gas.
A force-free granular gas is considered with an impact-velocity-dependent coefficient of restitution as it follows from the model of viscoelastic particles. We analyze structure formation in this system by means of three independent methods: molecular dynamics, numerical solution of the hydrodynamic equations, and linear stability analysis of these equations. All these approaches indicate that structure formation occurs in force-free granular gases only as a transient process.
Brilliantov
Nikolai
N
Institut für Biochemie, Charité, Monbijoustrasse 2, 10117 Berlin, Germany.
Salueña
Clara
C
Schwager
Thomas
T
Pöschel
Thorsten
T