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Extended thermodynamics and the Jeffrey's constitutive equation

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Abstract

Extended irreversible thermodynamics provides an evolution equation for the viscous pressure tensor which reduces to the Jeffrey's constitutive equation in the long-wave limit. in contrast with Jeffrey's equation, the equation obtained in extended irreversible thermodynamics leads to finite speed of propagation for shear pulses. The nonlocal effects are included into the theory by allowing the entropy to depend on higher-order fluxes, instead of spatial gradients. The use of the former ones is clearly advantageous in the high-frequency domain.

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Authors and Affiliations

  1. Departament de Fisica (Estadistica), Universitat Autònoma de Barcelona, Bellaterra, Catalonia, Spain

    J. Camacho &  David Jou

  2. Institut d'Estudis Catalans, Spain

    David Jou

Authors
  1. J. Camacho
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  2. David Jou
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Camacho, J., Jou, D. Extended thermodynamics and the Jeffrey's constitutive equation. Rheol Acta 30, 226–229 (1991). https://doi.org/10.1007/BF00366635

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  • DOI: https://doi.org/10.1007/BF00366635

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