E-raamat: Introduction to Reactive Gas Dynamics [Oxford Scholarship Online e-raamatud]

Writing for students with basic knowledge in thermodynamics, statistical physics, and fluid mechanics, Brun (director of research, Centre National de la Recherche Scientifique) presents an introduction to the analysis of the coupling and interaction between chemical phenomena and aerodynamic processes of gases. In the first half of the text, he provides a statistical description of a gaseous reactive medium, develops solutions for evolution equations at the semi-microscopic and macroscopic levels, determines transport properties for pure gases and mixtures corresponding to linearized non-equilibrium of zero order solutions, and proposes a general method of modeling reactive gas flows with arbitrary degree and type of non-equilibrium. In the second half, the macroscopic properties of reactive flows are analyzed, mainly by way of typical examples. Chapters in this section present the general equations governing the reactive flows; examine shock waves, unsteady flows, boundary layers, inviscid and dissipative reactive flows, shock tubes, and shock tunnels; and interpret the experimental results concerning relaxation times, vibrational populations, and reaction rates. Annotation ©2009 Book News, Inc., Portland, OR (booknews.com)

In the high energy gas flows, associating high velocities and high temperatures, physical and chemical processes such as molecular vibrational excitation, dissociation, ionisation or various reactions take palce and deeply influence the structure of the flows. The characteristic times of these processes have the same order of magnitude as aerodynamic characteristic times so that these reactive media are generally in thermodynamic and chemical non-equilibrium. This book presents a general introductory study of these media. In the first part their fundamental statistical aspects are described, starting from their discrete structure and taking into account the interactions between elementary particles: the transport phenomena, relaxation and kinetics as well as their coupling are thus analysed and illustrated by many examples. The second part deals with the macroscopic re-entry bodies. Finally the experimental aspects of these flows, their simulations in shock tube and shock tunnel are described as well as their application, particularly in the aero- spatial domain.
This book is intended for researchers and students that have acquired basic knowledge in thermodynamics, statistical physics and fluid mechanics. It must also interest the engineers engaged in research and industry related to the applications of the reactive flows, in particular in the aerospace field and, more generally, all the researchers trying to simulate and calculate complex reactive flows.