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Non Ideal Gas Effects On Shock Waves In Weakly Ionized Gases
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Book Synopsis Non-Ideal Gas Effects on Shock Waves in Weakly Ionized Gases by : Robert Rubinstein
Download or read book Non-Ideal Gas Effects on Shock Waves in Weakly Ionized Gases written by Robert Rubinstein and published by . This book was released on 2000 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: A shock wave in a weakly ionized gas can be preceeded by a charge separation region if the Debye length is larger than the shock width. It has been proposed that electrostatic contributions to pressure in the charge separation region can increase the sound speed ahead of the shock well above the sound speed in a neutral gas at the same temperature and therefore increase the shock propagation speed. This proposal is investigated numerically and theoretically. It is concluded that although the ion gas becomes strongly non-ideal in the charge separation region, there is no appreciable effect on the neutral shock.
Book Synopsis NON-IDEAL GAS EFFECTS ON SHOCK WAVES IN WEAKLY IONIZED GASES FINAL REPORT... NASA/CR-2000-210081... JUN. 7, 2000 by : United States. National Aeronautics and Space Administration
Download or read book NON-IDEAL GAS EFFECTS ON SHOCK WAVES IN WEAKLY IONIZED GASES FINAL REPORT... NASA/CR-2000-210081... JUN. 7, 2000 written by United States. National Aeronautics and Space Administration and published by . This book was released on 2001* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Relaxation from Steady States Far from Equilibrium and the Persistence of Anomalous Shock Behavior in Weakly Ionized Gases by : Robert Rubinstein
Download or read book Relaxation from Steady States Far from Equilibrium and the Persistence of Anomalous Shock Behavior in Weakly Ionized Gases written by Robert Rubinstein and published by . This book was released on 1999 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shock Wave Structure in a Fully Ionized Gas Based on Multi-component Fluid Theory by : Huon Li
Download or read book Shock Wave Structure in a Fully Ionized Gas Based on Multi-component Fluid Theory written by Huon Li and published by . This book was released on 1961 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Shock Waves in Nonequilibrium Gases and Plasmas by : William M. Hilbun
Download or read book Shock Waves in Nonequilibrium Gases and Plasmas written by William M. Hilbun and published by . This book was released on 1997-10-01 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis and assessment of three mechanisms describing plasma/ shock wave interactions was conducted under conditions typically encountered in a weakly ionized glow discharge. The mechanisms of ion-acoustic wave damping, post-shock energy addition and thermal inhomogeneities were examined by numerically solving the Euler equations with appropriate source terms adapted for each mechanism. Ion-acoustic wave damping was examined by modeling the partially ionized plasma as two fluids in one spatial dimension using the Riemann problem as a basis. Post-shock energy addition in the form of nonequilibrium vibrational energy relaxation was also examined in one spatial dimension using the Riemann problem as a basis. The influence of thermal inhomogeneities on shock wave propagation was examined in two spatial dimensions for both a Riemann shock and a shock generated by a spark discharge. Shocks were propagated through realistic thermal profiles with the resulting shock structure examined through the numerical application of various optical diagnostic techniques. Results from shock simulations indicate that ion-acoustic wave damping has an insignificant effect on the neutral flow at fractional ionization levels typical of glow discharges. Post-shock vibrational energy relaxation is also unable to effect the shock structure on the time scales of interest. An analysis of the effects of thermal inhomogeneities reveals that many of the observed plasma/shock anomalies can be explained based solely on this mechanism.
Book Synopsis Shock Wave Structure in Partially Ionized Gases by : Maheshinder Singh Grewal
Download or read book Shock Wave Structure in Partially Ionized Gases written by Maheshinder Singh Grewal and published by . This book was released on 1962 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structure of a shock wave in a partially ionized gas, which is in thermal on-equilibrium ahead of the shock wave, is investigated. A method is developed to solve this problem by separating it into two parts. First the structure of the shock wave associated with the mixture of ions and atoms, which are assumed to behave alike through the shock transition, is taken to be of the Mott-Smith form. Then the behavior of electrons as they pass through this ion-atom shock is analyzed. Using this method, calculations are made for the shock wave structure in partially ionized argon for Mach numbers equal to 8, 10 and 12, and for the values of the lectron-ion temperature ratio ahe d of the shock wave equal to 3, 5 and 8. (Author).
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781792783623 Total Pages :26 pages Book Rating :4.7/5 (836 download)
Book Synopsis Shock Wave Dynamics in Weakly Ionized Gases by : National Aeronautics and Space Adm Nasa
Download or read book Shock Wave Dynamics in Weakly Ionized Gases written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-12-28 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have begun a comprehensive series of analyses and experiments to study the basic problem of shock wave dynamics in ionized media. Our objective is to isolate the mechanisms that are responsible for the decrease in the shock amplitude and also to determine the relevant plasma parameters that will be required for a drag reduction scheme in an actual high altitude hypersonic flight. Specifically, we have initiated a program of analyses and measurements with the objective of (i) fully characterizing the propagation dynamics in plasmas formed in gases of aerodynamic interest, (ii) isolating the mechanisms responsible for the decreased shock strength and increased shock velocity, (iii) extrapolating the laboratory observations to the technology of supersonic flight. Johnson, Joseph A., III Langley Research Center NAG1-1930...
Book Synopsis Equilibrium Hydrodynamic Variables Behind a Reflected Shock Wave in Hydrogen by : Eugene B. Turner
Download or read book Equilibrium Hydrodynamic Variables Behind a Reflected Shock Wave in Hydrogen written by Eugene B. Turner and published by . This book was released on 1959 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 2000 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Equilibrium Normal Shock Properties for Vibrationally Excited CO2-N2-He Gas Mixtures by : Michael T. Madden
Download or read book Equilibrium Normal Shock Properties for Vibrationally Excited CO2-N2-He Gas Mixtures written by Michael T. Madden and published by . This book was released on 1970 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are given for equilibrium properties behind incident and reflected normal shock waves in CO2-N2-He mixtures wherein the gas may be vibrationally excited but not chemically reacting. A rapid numerical iterative analysis is described, and the results are given in simple graphical form for convenient use in shock tube and shock tunnel experiments. The results are anticipated to be of particular use in determining reservoir conditions for shock tunnel experiments dealing with vibrational population inversions in rapidly expanding mixtures. (Author).
Book Synopsis Unsteady Interaction of Shock and Detonation Waves in Gases by : Viktor Pavlovich Korobeĭnikov
Download or read book Unsteady Interaction of Shock and Detonation Waves in Gases written by Viktor Pavlovich Korobeĭnikov and published by CRC Press. This book was released on 1989 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis THE STRUCTURE OF EXTREMELY STRONG SHOCK WAVES IN WEAKLY IONIZED GASES. by : DEMETRIO BASTOS NETTO
Download or read book THE STRUCTURE OF EXTREMELY STRONG SHOCK WAVES IN WEAKLY IONIZED GASES. written by DEMETRIO BASTOS NETTO and published by . This book was released on 1971 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Normal Ionizing Shock Waves; the Effects of Equilibrium, Dissociation and Ionization by : Robert Taussig
Download or read book Normal Ionizing Shock Waves; the Effects of Equilibrium, Dissociation and Ionization written by Robert Taussig and published by . This book was released on 1964 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solutions for a model of a normal ionizing shock wave in an electromagnetic field are obtained. The model considers an ideal monatomic gas, and includes the equilibrium composition of the gas, the chemical energy of ionization and dissociation absorbed at the shock front. Solutions for this more complex, and more realistic, model are called solutions with chemistry, in contrast to the ideal gas solutions for the simple model analyzed before. The gas is composed of four chemical species, H sub 2 H, H(+), and e( - ), assumed to be at chemical equilibrium upstream and downstream from the shock.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Anomalous Shock Wave Propagation and Dispersion in Weakly Ionized Plasma by :
Download or read book Studies of Anomalous Shock Wave Propagation and Dispersion in Weakly Ionized Plasma written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of weak ionization on the strength of shock waves in supersonic gas flows were studied in an experimental program. Claims that weak ionization can substantially reduce shock wave strength, independently of any plasma heating effects, were evaluated. Experiments were conducted in both shock tubes and in supersonic, steady flow, plasma wind- tunnels. Temperatures and ionization levels in the flows were measured. It was demonstrated that shocks can be weakened by creating an electric discharge in the flow, but this effect is purely a consequence of the Joule heating of the plasma. Without heating, ionization alone does not weaken the shock.
Book Synopsis NASA Langley Scientific and Technical Information Output 2000 by :
Download or read book NASA Langley Scientific and Technical Information Output 2000 written by and published by . This book was released on 2001 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Temperature Phenomena in Shock Waves by : Raymond Brun
Download or read book High Temperature Phenomena in Shock Waves written by Raymond Brun and published by Springer Science & Business Media. This book was released on 2012-01-24 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
