Lyapunov spectrum of granular gases

Journal Article · Fri Jun 01 00:00:00 EDT 2001 · Physical Review E

DOI:https://doi.org/10.1103/PhysRevE.63.061306· OSTI ID:40203316

McNamara, Sean; Mareschal, Michel

We calculate and study the Lyapunov spectrum of a granular gas maintained in a steady state by an isokinetic thermostat. Considering restitution coefficients greater than unity allows us to show that the spectra change smoothly and continuously at equilibrium. The shearing instability of the granular gas, however, provokes an abrupt change in the structure of the spectrum. The relationship between various physically relevant quantities and the energy dissipation rate differs from previously studied nonequilibrium steady states.

• Sponsoring Organization: (US)
• OSTI ID: 40203316
• Journal Information: Physical Review E, Vol. 63, Issue 6; Other Information: DOI: 10.1103/PhysRevE.63.061306; Othernumber: PLEEE8000063000006061306000001; 083106PRE; PBD: Jun 2001; ISSN 1063-651X
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ENERGY LOSSES
GASES
INSTABILITY
SPECTRA