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Granular gases: dynamics and collective effects

A Barrat1, E Trizac2 and M H Ernst3

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We present a biased review of some of the most 'spectacular' effects appearing in the dynamics of granular gases where the dissipative nature of the collisions leads to a rich phenomenology, exhibiting striking differences with equilibrium gases. Among these differences, the focus here is on the illustrative examples of the 'Maxwell demon'-like experiment, modification of Fourier's law, non-equipartition of energy and non-Gaussianity of the velocity distributions. The presentation remains as non-technical as possible.


PACS

47.55.-t Nonhomogeneous flows

01.30.Rr Surveys and tutorial papers; resource letters

Subjects

Fluid dynamics

Education and communication

Dates

Issue 24 (22 June 2005)

Received 16 March 2005

Published 3 June 2005



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