Granular gas cooling and relaxation to the steady state in regard to the overpopulated tail of the velocity distribution

Thorsten Pöschel, Nikolai V. Brilliantov, Arno Formella

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We present a universal description of the velocity distribution function of granular gases, f(v), valid for both, small and intermediate velocities where v is close to the thermal velocity and also for large v where the distribution function reveals an exponentially decaying tail. By means of large-scale Monte Carlo simulations and by kinetic theory we show that the deviation from the Maxwell distribution in the high-energy tail leads to small but detectable variation of the cooling coefficient and to extraordinary large relaxation time.

Original languageEnglish
Pages (from-to)701-711
Number of pages11
JournalInternational Journal of Modern Physics C
Volume18
Issue number4
DOIs
Publication statusPublished - Apr 2007
Externally publishedYes

Keywords

  • Granular gases
  • Overpopulated high-energy tail
  • Velocity distribution function

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