2000/05/05 by Raffaele Cafiero, Stefan Luding, Hans J. Herrmann +1 · 5 citations
Engineering · Physics and Astronomy · #Geotechnical and Geomechanical Engineering #Granular flow and fluidized beds #Planetary Science and Exploration #cond-mat.dis-nn #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevlett.84.6014
4 pages, 5 figures (accepted as Phys. Rev. Lett.)
arxiv created 2000/05/05 · openalex publication_date 2000/06/26 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study a two-dimensional granular gas of inelastic spheres subject to multiplicative driving proportional to a power |v(x)|^\ensuremathδ of the local particle velocity v(x). The steady state properties of the model are examined for different values of \ensuremathδ, and compared with the homogeneous case \ensuremathδ\phantom\rule0ex0ex=\phantom\rule0ex0ex0. 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.