Chapter

Transport and Relaxation in Non-Equilibrium Regimes

Raymond Brun

in Introduction to Reactive Gas Dynamics

Published in print February 2009 | ISBN: 9780199552689
Published online May 2009 | e-ISBN: 9780191720277 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199552689.003.0006
 Transport and Relaxation in Non-Equilibrium Regimes

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For cases where the zero order distribution function is out of equilibrium, the Chapman-Enskog method may also be applied (SNE solution). This chapter analyses Navier-Stokes equations, including specific transport terms and relaxation and/or kinetic equations. Examples of vibrational non-equilibrium gases are developed. The case of dissociating gases is examined and the interaction between vibrational relaxation and chemical kinetics is particularly pointed out. Thus, the chemical dissociation rate constants are modified and the relaxation equations take the dissociation and the recombination into account. Particular points are examined in the appendices, such as the computation of various specific transport terms and parameters characteristic of the vibration-dissociation interaction.

Keywords: dissociation; recombination; vibration-dissociation interaction; transport terms

Chapter.  12400 words.  Illustrated.

Subjects: Mathematical and Statistical Physics

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