Identification of an average temperature and a dynamical pressure in a multitemperature mixture of fluids

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dc.creatorGouin, Henri
dc.creatorRuggeri, Tommaso
dc.date2008-07-17
dc.date.accessioned2026-07-07T09:50:58Z
dc.date.available2026-07-07T09:50:58Z
dc.descriptionWe present a classical approach of a mixture of compressible fluids when each constituent has its own temperature. The introduction of an average temperature together with the entropy principle dictates the classical Fick law for diffusion and also novel constitutive equations associated with the difference of temperatures between the components. The constitutive equations fit with results recently obtained through Maxwellian iteration procedure in extended thermodynamics theory of multitemperature mixtures. The differences of temperatures between the constituents imply the existence of a new dynamical pressure even if the fluids have a zero bulk viscosity. The nonequilibrium dynamical pressure can be measured and may be convenient in several physical situations as for example in cosmological circumstances where - as many authors assert - a dynamical pressure played a major role in the evolution of the early universe.
dc.description16 pages
dc.identifierhttps://arxiv.org/abs/0807.2727
dc.identifierhttp://arxiv.org/abs/0807.2727
dc.identifierPhysical Review E: Statistical, Nonlinear, and Soft Matter Physics 78, 1 (2008) 016303
dc.identifierdoi:10.1103/PhysRevE.78.016303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/165127
dc.subjectClassical Physics
dc.subjectMathematical Physics
dc.titleIdentification of an average temperature and a dynamical pressure in a multitemperature mixture of fluids
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