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Nonequilibrium temperature and fluctuation–dissipation temperature in flowing gases

Author

Listed:
  • Jou, D.
  • Criado-Sancho, M.
  • Casas-Vázquez, J.

Abstract

The expressions for the nonequilibrium temperature derived from the fluctuation–dissipation theorem and from the differential of the informational nonequilibrium entropy for ideal gases under shear flow are compared. Both temperatures are different, in particular, the thermodynamic temperature derived from the entropy is lower than the local-equilibrium temperature, whereas the effective temperature defined from the fluctuation–dissipation expression is higher than the local-equilibrium temperature.

Suggested Citation

  • Jou, D. & Criado-Sancho, M. & Casas-Vázquez, J., 2005. "Nonequilibrium temperature and fluctuation–dissipation temperature in flowing gases," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 358(1), pages 49-57.
    • Handle: RePEc:eee:phsmap:v:358:y:2005:i:1:p:49-57
    DOI: 10.1016/j.physa.2005.06.006
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    References listed on IDEAS

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    1. Jou, D. & Criado-Sancho, M., 2001. "Thermodynamics of dilute gases in shear flow," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 292(1), pages 75-86.
    2. Bidar, H. & Jou, D. & Criado-Sancho, M., 1996. "Thermodynamics of ideal gases under shear: a maximum-entropy approach," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 233(1), pages 163-174.
    3. Makse, Hernán A., 2003. "A thermodynamic approach to slowly sheared granular matter," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 330(1), pages 83-90.
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