In this paper we analyze a heat transfer problem in multi-component mixtures of inert gases at rest, confined between two infinite parallel plates. We refer to a system of field equations from extended thermodynamics to describe the phenomenon and we derive the non-controllable boundary conditions trough a "fluctuation" principle. Analytical calculations suggest that the temperature exhibits the classical Fourier solution combined with boundary layers. Furthermore, in accordance with the expectation, non-constant mass concentrations are predicted. Their behavior depends on the gradient of the temperature field and on the ratios of the molecular masses of the mixture constituents.

Heat transfer in multi-component gas mixtures described by extended thermodynamics

BARBERA, Elvira;
2012-01-01

Abstract

In this paper we analyze a heat transfer problem in multi-component mixtures of inert gases at rest, confined between two infinite parallel plates. We refer to a system of field equations from extended thermodynamics to describe the phenomenon and we derive the non-controllable boundary conditions trough a "fluctuation" principle. Analytical calculations suggest that the temperature exhibits the classical Fourier solution combined with boundary layers. Furthermore, in accordance with the expectation, non-constant mass concentrations are predicted. Their behavior depends on the gradient of the temperature field and on the ratios of the molecular masses of the mixture constituents.
2012
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/1941837
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 13
social impact