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Introduction to Reactive Gas Dynamics$
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Raymond Brun

Print publication date: 2009

Print ISBN-13: 9780199552689

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780199552689.001.0001

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Reactive Flows in the Dissipative Regime

Reactive Flows in the Dissipative Regime

Chapter:
(p.294) Ten Reactive Flows in the Dissipative Regime
Source:
Introduction to Reactive Gas Dynamics
Author(s):

Raymond Brun

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199552689.003.0012

This chapter examines reactive flows in dissipative regime in equilibrium and non-equilibrium conditions. It begins with a discussion of boundary layer flows, focusing on the influence of the chemical kinetics and of the wall catalycity on the wall heat transfer. Particular cases of vibrational non-equilibrium boundary layers are then examined, such as the boundary layer developing behind incident and reflected shock waves as well as along the walls of the divergent part of a supersonic nozzle. The results of computation of two-dimensional flows in nozzles and around various bodies are presented. The interaction between the non-equilibrium processes and the flow parameters is clearly emphasized. Similarly, an example of computation of a gasdynamic laser (CO2/N2) is presented. In the appendices, a few particular problems are examined, such as the vibrational catalycity, the use of the generalized Rankine-Hugoniot relations, the order of magnitude of transport terms, and a general view on the unsteady numerical methods used for solving Navier-Stokes equations in non-equilibrium conditions.

Keywords:   dissipative flow, non-equilibrium flow, boundary layer, hypersonic nozzle, catalycity, gasdynamic laser, unsteady numerical method

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