Interaction of Sound and Turbulence with Particular Application to the Scattering of Sound from a Turbulent Wake
Title | Interaction of Sound and Turbulence with Particular Application to the Scattering of Sound from a Turbulent Wake PDF eBook |
Author | |
Publisher | |
Pages | 176 |
Release | 1974 |
Genre | |
ISBN |
Experimental Investigations on the Scattering of Sound by Turbulence
Title | Experimental Investigations on the Scattering of Sound by Turbulence PDF eBook |
Author | Dieter W. Schmidt |
Publisher | |
Pages | 74 |
Release | 1961 |
Genre | Scattering (Physics) |
ISBN |
Experimental investigations of the scattering of sound by turbulence were performed in a wind tunnel. Turbulence was produced by grids of parallel circular rods (with diameters of 0.1 to 1.0 cm and grid meshlengths of 0.5 to 2. 5 cm); the sound frequencies covered a range of 100 to 500 kc. Disturbances of the measurements due to reflections of sound waves at the tunnel walls were avoided by the application of short sound pulses. The dependence of the damping of the sound waves on the sound frequency, the Mach number of the turbulence, the length of the sound path in the turbulent flow and a predominant direction of the turbulent eddies was measured. Theoretical predictions were confirmed and partly extended. In the range of the parameters which is of interest for practical use the most important results are the proportionality of the damping to the square of the sound frequency and to the square of the turbulent Mach number. Based on the measurements and the theoretical considerations, a formula is derived which is applicable to the damping of sound by turbulent scattering in the atmosphere. (Author).
Dissertation Abstracts International
Title | Dissertation Abstracts International PDF eBook |
Author | |
Publisher | |
Pages | 848 |
Release | 1975 |
Genre | Dissertations, Academic |
ISBN |
Comprehensive Dissertation Index
Title | Comprehensive Dissertation Index PDF eBook |
Author | |
Publisher | |
Pages | 890 |
Release | 1984 |
Genre | Dissertations, Academic |
ISBN |
Collected Reprints of the Wave Propagation Laboratory
Title | Collected Reprints of the Wave Propagation Laboratory PDF eBook |
Author | |
Publisher | |
Pages | 610 |
Release | 1967 |
Genre | Atmosphere |
ISBN |
Mechanics of Flow-Induced Sound and Vibration, Volume 2
Title | Mechanics of Flow-Induced Sound and Vibration, Volume 2 PDF eBook |
Author | William K. Blake |
Publisher | Academic Press |
Pages | 696 |
Release | 2017-08-14 |
Genre | Science |
ISBN | 0128122900 |
Mechanics of Flow-Induced Sound and Vibration, Volume 2: Complex Flow-Structure Interactions, Second Edition, enables readers to fully understand flow-induced vibration and sound, unifying the disciplines of fluid dynamics, structural dynamics, vibration, acoustics, and statistics in order to classify and examine each of the leading sources of vibration and sound induced by various types of fluid motion. Starting from classical theories of aeroacoustics and hydroacoustics, a formalism of integral solutions valid for sources near boundaries is developed and then broadened to address different source types, including hydrodynamically induced cavitation and bubble noise, turbulent wall-pressure fluctuations, pipe and duct systems, lifting surface flow noise and vibration, and noise from rotating machinery. Each chapter is illustrated with comparisons of leading formulas and measured data. Combined with its companion book, Mechanics of Flow-Induced Sound and Vibration, Volume 1: General Concepts and Elementary Sources, the book covers everything an engineer needs to understand flow-induced sound and vibration. This book will be a vital source of information for postgraduate students, engineers and researchers with an interest in aerospace, ships and submarines, offshore structures, construction, and ventilation. Presents every important topic in flow-induced sound and vibration Covers all aspects of the topics addressed, from fundamental theory, to the analytical formulas used in practice Provides the building blocks of computer modeling for flow-induced sound and vibration
Air Force Research Resumés
Title | Air Force Research Resumés PDF eBook |
Author | |
Publisher | |
Pages | 592 |
Release | |
Genre | Military research |
ISBN |