Rotationally driven gas of inelastic rough spheres

R. Cafiero; S. Luding; H. J. Herrmann

doi:10.1209/epl/i2002-00295-7

Rotationally driven gas of inelastic rough spheres

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

40 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	854-860
Number of pages	7
Journal	Europhysics letters
Volume	60
Issue number	6
DOIs	https://doi.org/10.1209/epl/i2002-00295-7
Publication status	Published - 15 Dec 2002
Externally published	Yes

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abstract = "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.",

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N2 - 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.

AB - 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.

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M3 - Article

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EP - 860

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Rotationally driven gas of inelastic rough spheres

Abstract

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