On the Thermodynamics of Granular Media

Details On the Thermodynamics of Granular Media On the Thermodynamics of Granular Media

1992-11-18

arxiv.org/abs/cond-mat/9211011v1

Physics

Condensed Matter

11 p., no figs., plain TeX

Scientific paper

10.1051/jp2:1993141

A thermodynamic formulation for moving granular material is proposed. The fluctuations due to the constant flux and dissipation of energy are controlled in a `granular' ensemble by a pressure $\wp$ (`compression') which is conjugate to a contact volume (`contactopy'). The corresponding response function (`dissipativity') describes how dissipation increases with $\wp$ and should serve to identify the fluidization transition and 1/f noise. In the granular ensemble one can consider the granular medium as a gas of elastically colliding particles and define a ``granular'' temperature and other standard thermodynamic quantities. PACS: 05.70, 46.10

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