Velocity statistics in dissipative, dense granular media.
Phys Rev E Stat Nonlin Soft Matter Phys
; 75(6 Pt 1): 062301, 2007 Jun.
Article
en En
| MEDLINE
| ID: mdl-17677311
ABSTRACT
We use a two-dimensional random-force model to investigate the velocity distributions in driven granular media. In general, the shape of the distribution is found to depend on the degree of dissipation and the packing fraction but, in highly dissipative systems, the velocity distributions have tails close to exponential. We show that these arise from the dynamics of single particles traveling in dilute regions and influenced predominantly by the random force. A self-consistent kinetic theory is developed to describe this behavior.
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Asunto de la revista:
BIOFISICA
/
FISIOLOGIA
Año:
2007
Tipo del documento:
Article
País de afiliación:
Reino Unido