Self-diffusion in granular gases

Nikolai V. Brilliantov, Thorsten Pöschel

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

The coefficient of self-diffusion for a homogeneously cooling granular gas changes significantly if the impact-velocity dependence of the restitution coefficient [Formula Presented] is taken into account. For the case of a constant [Formula Presented] the particles spread logarithmically slowly with time, whereas a velocity-dependent coefficient yields a power law time dependence. The impact of the difference in these time dependences on the properties of a freely cooling granular gas is discussed.

Original languageEnglish
Pages (from-to)1716-1721
Number of pages6
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume61
Issue number2
DOIs
Publication statusPublished - 2000
Externally publishedYes

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