Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/9349
Title: Dynamical properties of granular rotors
Authors: CLEUREN, Bart 
EICHHORN, Ralf
Issue Date: 2008
Publisher: IOP Publishing
Source: JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, 2008(10), (ART N° P10011)
Abstract: The stochastic motion of an arbitrarily shaped rotor, free to rotate around a fixed axis as a result of dissipative collisions with a surrounding thermalized gas, is investigated. A Boltzmann master equation is derived, starting from the elementary gas–rotor collisions. Analytical expressions for the moments of the rotational speed and the rotational temperature are obtained in the form of a series expansion, using the mass ratio of the gas particle and the rotor as the expansion parameter. We discuss the general features of the motion, which is largely determined by the geometry of the rotor. In particular, a stationary non-zero rotation is observed for rotationally asymmetric rotors. Molecular dynamics simulations support the analytical results.
Keywords: stochastic particle dynamics (theory), granular matter, molecular dynamics
Document URI: http://hdl.handle.net/1942/9349
ISSN: 1742-5468
e-ISSN: 1742-5468
DOI: 10.1088/1742-5468/2008/10/P10011
ISI #: 000260529900013
Category: A1
Type: Journal Contribution
Validations: ecoom 2009
Appears in Collections:Research publications

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