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Internal variables for relaxation phenomena in heat and mass transfer.

Author(s) : KALOSPIROS N. S., EDWARDS B. J., BERIS A. N.

Type of article: Article

Summary

A general theory is developed for relaxation phenomena in heat and mass transfer, based on an internal variables approach. The model equations are systematically derived from the description of the dissipation and the extended free energy of the system (Hamiltonian) in terms of the traditional (equilibrium) thermodynamic variables and internal variables characterizing heat and mass flux. The resulting equations generalize the most important from the previously used empirical models. The meaning of the internal variables is clarified through a comparison with the results of the kinetic theory of gases. Mass transfer relaxation phenomena in polymers are also discussed.

Details

  • Original title: Internal variables for relaxation phenomena in heat and mass transfer.
  • Record ID : 1993-2548
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 36 - n. 5
  • Publication date: 1993/03

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