Temperature anisotropy in a driven granular gas

Roger M. van der Meer; P. Reimann

doi:10.1209/epl/i2005-10552-9

Temperature anisotropy in a driven granular gas

Roger M. van der Meer
, P. Reimann

Research output: Contribution to journal › Article › Academic › peer-review

38 Citations (Scopus)

2 Downloads (Pure)

Abstract

When smooth granular material is fluidized by vertically shaking a container, we find that the temperature in the direction of energy input always exceeds the temperature in the other directions. An analytical model is presented which shows how the anisotropy can be traced back to the inelasticity of the interparticle collisions and the collisions with the wall. For a dilute granular gas, the model compares very well with molecular-dynamics simulations. It is concluded that any non-isotropic driving of a granular gas in a steady state necessarily causes anisotropy of the granular temperature.

Original language	Undefined
Pages (from-to)	384-390
Number of pages	7
Journal	Europhysics letters
Volume	74
Issue number	3
DOIs	https://doi.org/10.1209/epl/i2005-10552-9
Publication status	Published - 2006

Keywords

IR-61318
METIS-231494

Access to Document

10.1209/epl/i2005-10552-9

Cite this

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AB - When smooth granular material is fluidized by vertically shaking a container, we find that the temperature in the direction of energy input always exceeds the temperature in the other directions. An analytical model is presented which shows how the anisotropy can be traced back to the inelasticity of the interparticle collisions and the collisions with the wall. For a dilute granular gas, the model compares very well with molecular-dynamics simulations. It is concluded that any non-isotropic driving of a granular gas in a steady state necessarily causes anisotropy of the granular temperature.

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KW - METIS-231494

U2 - 10.1209/epl/i2005-10552-9

DO - 10.1209/epl/i2005-10552-9

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JO - Europhysics letters

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