Volume 94, Number 1, April 2011
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||31 March 2011|
Wave propagation in two-species relativistic flows
Department of Mathematics, University of Messina - Viale Ferdinando Stagno d'Alcontres, 31, 98166 Messina,
Accepted: 3 March 2011
We consider system of hyperbolic balance laws governing relativistic two-fluid flow in which entropy is produced only by disequilibrium between the temperatures of the fluids. We compare two such models: one in which thermal equilibrium is attained through a relaxation procedure, and a fully relaxed model. We describe how the relaxation procedure may be made consistent with the second law of thermodynamics. The wave velocities for both models are obtained and compared: the mixture hydrodynamical velocity of the relaxed system is always less than the hydrodynamical velocity of the relaxation system.
PACS: 47.61.Jd – Multiphase flows / 42.65.Tg – Optical solitons; nonlinear guided waves / 82.20.Rp – State to state energy transfer
© EPLA, 2011
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