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Thermodynamic functions for Taylor dispersion

J. Camacho

  • Departament de Física, Grup de Física Estadística, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain

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Phys. Rev. E 48, 1844 – Published 1 September, 1993

DOI: https://doi.org/10.1103/PhysRevE.48.1844

Abstract

The link between Taylor dispersion and irreversible thermodynamics pointed out by Camacho [Phys. Rev. E 47, 1049 (1993)] is substantiated through the study of the thermodynamic functions associated to Taylor dispersion. They are evaluated by two means. First, from the connection between the one-dimensional (1D) thermodynamic functions of extended thermodynamics—entropy, entropy flux, entropy production, and chemical potential—and the constitutive equations describing the dynamics of the Taylor flux components; and second, from a purely thermodynamic analysis in the three-dimensional (3D) space. Both independent procedures are shown to yield the same results, thus confirming the physical entity of the Taylor thermodynamic functions. The different interpretation of the same physical quantities given by 3D and 1D observers is thoroughly discussed.

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Outline

Information

Phys. Rev. E 48, 1844– Published 1 September, 1993
  • Received 2 February 1993

© 1993 American Physical Society

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