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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

(p.294) Ten Reactive Flows in the Dissipative Regime
Introduction to Reactive Gas Dynamics

Raymond Brun

Oxford University Press

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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