Numéro |
J. Phys. II France
Volume 3, Numéro 4, April 1993
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Page(s) | 427 - 433 | |
DOI | https://doi.org/10.1051/jp2:1993141 |
J. Phys. II France 3 (1993) 427-433
On the thermodynamics of granular media
H.J. HerrmannHöchstleistungsrechenzentrum, KFA, 5170 Jülich, Germany
(Received 8 February 1993, accepted 16 February 1993)
Abstract
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
("compression") which is conjugate to a contact volume ("contactopy"). The corresponding response function ("dissipativity")
describes how dissipation increases with
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.
05.70 - 46.10
© Les Editions de Physique 1993