title: Two-dimensional granular gas of inelastic spheres with multiplicative driving.
abstract: We study a two-dimensional granular gas of inelastic spheres subject to multiplicative driving proportional to a power |v(x)|(delta) of the local particle velocity v(x). The steady state properties of the model are examined for different values of delta, and compared with the homogeneous case delta = 0. A driving linearly proportional to v(x) seems to reproduce some experimental observations which could not be reproduced by a homogeneous driving. Furthermore, we obtain that the system can be homogenized even for strong dissipation, if a driving inversely proportional to the velocity is used.
authors.affiliation: P.M.M.H., Ecole Supèrieure de Physique et de Chimie Industrielles (ESPCI), 10, rue Vauquelin, 75251 Paris CEDEX 05, France.
authors.forename: R
authors.initials: R
authors.lastname: Cafiero
authors.forename: S
authors.initials: S
authors.lastname: Luding
authors.forename: H
authors.initials: H
authors.lastname: Jürgen Herrmann