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Dynamical pressure for fluid mixtures with several temperatures

Published online by Cambridge University Press:  05 August 2009

Henri Gouin and
Tommaso Ruggeri
Henri Gouin
Affiliation:
Université d'Aix-Marseille & M2P2, C.N.R.S. U.M.R. 6181, Case 322, Av. Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
Tommaso Ruggeri
Affiliation:
Department of Mathematics and Research Center of Applied Mathematics C.I.R.A.M. University of Bologna, Via Saragozza 8, 40123-I Bologna, Italy
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Abstract

We consider binary mixtures of fluids with components having different temperatures. A new dynamical pressure term is associated with thedifference of temperatures between components even if bulkviscosities are null. The non-equilibrium dynamical pressure can bemeasured and may be convenient in several physical situations asfor example in cosmological circumstances where a dynamicalpressure played a major role in the evolution of the earlyuniverse.

Keywords

Fluid mixturesmulti-temperaturesdynamical pressureHamilton's principleMélanges de fluidesmulti-temperaturespression dynamiqueprinciple d'Hamilton

Information

Type
Research Article
Information
Mechanics & Industry , Volume 10 , Issue 3-4: 19e Congrès français de mécanique (CFM 2009) , May 2009, pp. 239 - 243
Copyright
© AFM, EDP Sciences, 2009

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