| Issue |
EPL
Volume 94, Number 1, April 2011
|
|
|---|---|---|
| Article Number | 14001 | |
| Number of page(s) | 6 | |
| Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
| DOI | https://doi.org/10.1209/0295-5075/94/14001 | |
| 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,
Italy, EU
Received:
21
December
2010
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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