Viscosity in keplerian disks: Steady-state velocity distribution and non-local collision effects

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A kinetic model based on a numerical algorithm, rather than Boltzman's equation, yields the viscosity and velocity distribution for colliding, finite-size particles in a planetary ring. Results are similar to those of many-particle simulations, and show that non-local effects due to the finite size are dominant in many cases of interest. Only for small particles does the viscosity decrease with increasing optical thickness sufficiently for the standard ringlet instability model to apply. This numerical kinetic theory will allow study of multi-size particle distributions, as well as scattering due to gravitational interactions or alternative collision models.

Original languageEnglish (US)
Pages (from-to)524-535
Number of pages12
JournalIcarus
Volume123
Issue number2
DOIs
StatePublished - Oct 1996

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viscosity
velocity distribution
collision
collisions
particle size
planetary rings
kinetics
kinetic theory
particle size distribution
optical thickness
scattering
simulation
distribution
effect
interactions
particle

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Viscosity in keplerian disks : Steady-state velocity distribution and non-local collision effects. / Petit, J. M.; Greenberg, Richard J.

In: Icarus, Vol. 123, No. 2, 10.1996, p. 524-535.

Research output: Contribution to journalArticle

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