Rotationally driven gas of inelastic rough spheres

R. Cafiero*, S. Luding, H. J. Herrmann

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

38 Citations (Scopus)


We study a gas of inelastic rough spheres confined on a 2D plane, driven on the rotational degrees of freedom. Event-driven molecular dynamics (MD) simulations are compared to mean-field (MF) predictions with surprisingly good agreement for strong coupling of rotational and translational degrees of freedom -even for very strong dissipation in the translational degrees. Although the system is spatially homogeneous, the rotational velocity distribution is essentially Maxwellian. Surprisingly, the distribution of tangential velocities is strongly deviating from a Maxwellian. An interpretation of these results is proposed, as well as a setup for an experiment.

Original languageEnglish
Pages (from-to)854-860
Number of pages7
JournalEurophysics letters
Issue number6
Publication statusPublished - 15 Dec 2002
Externally publishedYes


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