Vibrational Relaxation in Carbon Dioxide/water-vapor Mixtures PDF Download
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Author: James W. L. Lewis Publisher: ISBN: Category : Languages : en Pages : 5
Book Description
Sound-absorption and -velocity measurements in carbon dioxide water-vapor mixtures were made over the temperature range 23-195C. The measurements were made using plane progressive waves inside a glass tube 1.73 cm in diameter. Values of the mixture relaxation time obtained from the data increase from 0.27X10 to the -8th power sec at 23C to 0.58X10 to the -8th power sec at 195C, displaying no minimum value as has been reported previously by other authors. The collision efficiency decreases slightly over this temperature range. Values of an average collision diameter calculated from the experimental data are in good agreement with values predicted by the Widom-Bauer theory, the basis of which is a chemical affinity between the CO2 and H2O molecules. (Author).
Author: James W. L. Lewis Publisher: ISBN: Category : Languages : en Pages : 5
Book Description
Sound-absorption and -velocity measurements in carbon dioxide water-vapor mixtures were made over the temperature range 23-195C. The measurements were made using plane progressive waves inside a glass tube 1.73 cm in diameter. Values of the mixture relaxation time obtained from the data increase from 0.27X10 to the -8th power sec at 23C to 0.58X10 to the -8th power sec at 195C, displaying no minimum value as has been reported previously by other authors. The collision efficiency decreases slightly over this temperature range. Values of an average collision diameter calculated from the experimental data are in good agreement with values predicted by the Widom-Bauer theory, the basis of which is a chemical affinity between the CO2 and H2O molecules. (Author).
Author: Malcolm J. Crocker Publisher: John Wiley & Sons ISBN: 9780471252931 Category : Technology & Engineering Languages : en Pages : 1494
Book Description
Acoustical engineers, researchers, architects, and designers need a comprehensive, single-volume reference that provides quick and convenient access to important information, answers and questions on a broad spectrum of topics, and helps solve the toughest problems in acoustical design and engineering. The Handbook of Acoustics meets that need. It offers concise coverage of the science and engineering of acoustics and vibration. In more than 100 clearly written chapters, experts from around the world share their knowledge and expertise in topics ranging from basic aerodynamics and jet noise to acoustical signal processing, and from the interaction of fluid motion and sound to infrasound, ultrasonics, and quantum acoustics. Topics covered include: * General linear acoustics * Nonlinear acoustics and cavitation * Aeroacoustics and atmospheric sound * Mechanical vibrations and shock * Statistical methods in acoustics * Architectural acoustics * Physiological acoustics * Underwater sound * Ultrasonics, quantum acoustics, and physical aspects of sound * Noise: its effects and control * Acoustical signal processing * Psychological acoustics * Speech communication * Music and musical acoustics * Acoustical measurements and instrumentation * Transducers The Handbook of Acoustics belongs on the reference shelf of every engineer, architect, research scientist, or designer with a professional interest in the propagation, control, transmission, and effects of sound.
Author: Moises Levy Publisher: Academic Press ISBN: 0080924255 Category : Technology & Engineering Languages : en Pages : 2513
Book Description
Sound waves propagate through galactic space, through two-dimensional solids, through biological systems, through normal and dense stars, and through everything that surrounds us; the earth, the sea, and the air. We use sound to locate objects, to identify objects, to understand processes going on in nature, to communicate, and to entertain. The elastic properties of materials determine the velocity of sound in them and tell us about their response to stresses something which is very important when we are trying to construct, manufacture, or create something with any material. The Handbook of Elastic Properties of Materials will provide these characteristics for almost everything whose elastic properties has ever been measured or deduced in a concise and approachable manner. Leading experts will explain the significance of the elastic properties as they relate to intrinsic microscopic behavior, to manufacturing, to construction, or to diagnosis. They will discuss the propagation of sound in newly discovered or created materials, and in common materials which are being investigated with a fresh outlook. The Handbook will provide the reader with the elastic properties of the common and mundane, the novel and unique, the immense and the microscopic, and the exhorbitantly dense and the ephemeral.. You will also find the measurement. And theoretical techniques that have been developed and invented in order to extract these properties from a reluctant nature and recalcitrant systems. Key Features * Solids, liquids and gases covered in one handbook * Articles by experts describing insights developed over long and Illustrious careers * Properties of esoteric substances, such as normal and dense stars, superfluid helium three, fullerness, two dimensional solids, extraterrestial substances, gems and planetary atmospheres * Properties of common materials such as food, wood used for musical instruments, paper, cement, and cork * Modern dynamic elastic properties measurement techniques
Author: Publisher: Elsevier ISBN: 0080531407 Category : Technology & Engineering Languages : en Pages : 457
Book Description
This volume provides an overview of modern acoustical techniques for the measurement of mechanical properties. Chapters include Fundamentals of Elastic Constants; Point Source/Point Receiver Methods; Laser Controlled Surface Acoustic Waves; Quantitative Acoustical Microscopy of Solids; Resonant Ultrasound Spectroscopy; Elastic Properties and Thermodynamics; Sound Speed as a Thermodynamic Property of Fluids; Noninvasive Determination of Sound Speed in Liquids; Introduction to the Elastic Constants of Gases; and Acoustic Measurement in Gases.
Author: Claudie Cayce Warf Publisher: ISBN: Category : Languages : en Pages : 87
Book Description
Measurements were made on 70% N2/30% CO2 and 84% N2/16% CO2 mixtures at room temperature and at 600K. The most important result was an accurate determination of the V-T transition rates for CO2/N2 collisions and of the relative efficiency of CO2 and N2 for this V-T process. Information was also acquired in regard to the rate of energy transfer into and out of the asymmetric stretching mode of the CO2 molecule and of the resonant exchange rate between the asymmetric stretching mode of carbon dioxide and the first excited level of nitrogen (v=1). Finally a brief report discusses acoustic absorption to extract the rate of energy transfer between the vibration of the bending mode of CO2 and the O2 vibration and the rate at which O2 deexcites the bending mode of CO2 in a v-t process.
Author: James W. L. Lewis
Author: James W. L. Lewis
Author: James Alton Burks
Author: James Waller Lambuth Lewis
Author: Joseph Alan Stregack
Author: Malcolm J. Crocker
Author: 
Author: Moises Levy
Author: 
Author: 
Author: Claudie Cayce Warf