4.5 Article

Heat transfer in a binary gas mixture between two parallel plates: an application of linear extended thermodynamics

期刊

ACTA MECHANICA
卷 220, 期 1-4, 页码 87-105

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SPRINGER WIEN
DOI: 10.1007/s00707-011-0465-3

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  1. GNFM-INdAM
  2. GNFM

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In this paper, we present a heat transfer problem in a binary inert mixture of ideal gases at rest between two parallel plates. For the description of the phenomenon, we have considered the field equations of a linearized extended thermodynamics theory with 13 moments, under the assumption of a common temperature for both the constituents. The solution of the system of equations presents non-controllable boundary values, for which a fluctuation principle is applied. We found that, unlike classical thermodynamics, the 13-moment field equations predict thermal diffusion effects and exhibit solutions with boundary layers. Moreover, the results are qualitatively similar to those obtained from the kinetic theory.

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