Shock Wave Structure in Gas Mixtures and Plasmas PDF Download

Author: Stanley Ray Macniven Sinclair
Publisher:
ISBN:
Category : Shock waves
Languages : en
Pages : 0

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Author: S. R. M. (Stanley Ray Macniven) Sinclair
Publisher: National Library of Canada
ISBN:
Category : Shock waves
Languages : en
Pages : 51

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The research was concerned with a theoretical description of shock wave structure in gaseous mixtures when diffusive effects are important. The problem considered in detail is the structure of a shock wave in a helium-argon mixture in which the argon is present in very small concentration. An anomalous result, cited in the literature, suggesting that the argon undergoes an initial pre-expansion before compression, was analysed to show the theoretical origin of this effect. The velocity distribution of a trace of heavy gas (and its lower moments) are watched as the heavy particles pass through a Mott-Smith background shock of lighter particles. The Mott-Smith background is chosen because its bimodal Maxwellian form provides an analytical determination of the free path to the next event for the heavy test particle at any point along its trajectory. This so-called Monte Carlo solution to the idealized diffusion shock problem can be used as a standard for evaluating the diffusion equations derived from various kinetic theory approximations. A number of systems of moment equations of the heavy particle Boltzmann equation were solved and the resulting heavy particle moment profiles compared with those of the Monte Carlo solution. A second strong diffusion problem was analysed from a kinetic theory point of view. It was found experimentally that the ion density profile through a shock in a weakly ionized plasma with elevated electron temperature is much more diffuse than the neutral atom shock. The theoretical analysis shows that this strong diffusion effect can be attributed to the electrical coupling between the ions and the hotter electron gas. (Author).

Author: Huon Li
Publisher:
ISBN:
Category : Differential equations
Languages : en
Pages : 132

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The multi-component continuous approach for the investigation of the gasdynamics of a plasma is presented. More information about the flow properties of a plasma can be obtained than from the classical magnetohydrodynamic approach. Also, the resulting equations appear to be more easily solved than the Blotzmann equation of classical kinetic theory. The basic macroscopic conservation equations for a non-reacting multi-component plasma are presented. The fluid properties of each component are referred to the mean velocity of that component. Therefore, no limitations are placed on the magnitude of the diffusion velocities. The effects of electric and magnetic fields are included. The equations for a two-component mixture are used to study the structure of a shock wave in a fully-ionized hydrogen gas. It is assumed that the momentum exchange and energy exchange between the ions and electrons are important because of the strong Coulomb forces present. (Author).

Author: Raymond Brun
Publisher: Springer Science & Business Media
ISBN: 3642251196
Category : Technology & Engineering
Languages : en
Pages : 344

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The high temperatures generated in gases by shock waves give rise to physical and chemical phenomena such as molecular vibrational excitation, dissociation, ionization, chemical reactions and inherently related radiation. In continuum regime, these processes start from the wave front, so that generally the gaseous media behind shock waves may be in a thermodynamic and chemical non-equilibrium state. This book presents the state of knowledge of these phenomena. Thus, the thermodynamic properties of high temperature gases, including the plasma state are described, as well as the kinetics of the various chemical phenomena cited above. Numerous results of measurement and computation of vibrational relaxation times, dissociation and reaction rate constants are given, and various ionization and radiative mechanisms and processes are presented. The coupling between these different phenomena is taken into account as well as their interaction with the flow-field. Particular points such as the case of rarefied flows and the inside of the shock wave itself are also examined. Examples of specific non-equilibrium flows are given, generally corresponding to those encountered during spatial missions or in shock tube experiments.

Author: Magdalena Bratos
Publisher:
ISBN:
Category :
Languages : en
Pages : 82

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Author: Wallace Hayes
Publisher: Elsevier
ISBN: 0323147852
Category : Science
Languages : en
Pages : 479

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Book Description
Physics of Shock Waves and High-Temperature Hydrodynamic Phenomena, Volume II presents interpretations of the physical basis of shockwaves and high-temperature hydrodynamic phenomena and gives practical guidance to those who work with these subjects in science and modern technology. This volume contains chapters discussing such topics as the shockwave structure in gases; physical and chemical kinetics in hydrodynamic processes; the radiative phenomena in shock waves and in strong explosions in the air; thermal waves and shockwaves in solids; and self-similar processes in gasdynamics. Physicists, engineers, researchers, and professors and students in the field of the physical sciences will find the book very educational.

Author: Raymond Brun
Publisher: Springer Science & Business Media
ISBN: 3642788351
Category : Science
Languages : en
Pages : 490

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Recently, there have been significant advances in the fields of high-enthalpy hypersonic flows, high-temperature gas physics, and chemistry shock propagation in various media, industrial and medical applications of shock waves, and shock-tube technology. This series contains all the papers and lectures of the 19th International Symposium on Shock Waves held in Marseille in 1993. They are published in four topical volumes, each containing papers on related topics, and preceded by an overview wrtitten by a leading international expert. The volumes may be purchased independently.

Author: E. H. Van Leeuwen
Publisher:
ISBN: 9780642081766
Category : Fluid dynamics
Languages : en
Pages : 11

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The structure of a weak normal shock wave is investigated analytically for the one-dimensional flow of a fluid, containing gas bubbles. The relative motion of the gas bubbles follow a Stokes-drag law. It is shown that for large values of time the gas bubbles behave isothermally and the shock wave approaches a steady state. For small values of time the gas bubbles behave isentropically and move faster than the fluid. Keywords include: Shock waves; Liquid bubble mixtures; Navier-Stokes equations.

Author: Ya B. Zel'dovich
Publisher: Courier Corporation
ISBN: 0486420027
Category : Science
Languages : en
Pages : 946

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Book Description
Physical, chemical processes in gases at high temperatures are focus of outstanding text by two distinguished physicists. Combines material from gas dynamics, shock-wave theory, thermodynamics and statistical physics, molecular physics, spectroscopy, radiation theory, other fields for comprehensive treatment. 284 black-and-white illustrations. 1966–1967 edition, originally published in two volumes.

Author: Robert E. Street
Publisher:
ISBN:
Category : Integro-differential equations
Languages : en
Pages : 64

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