Aero-Hydroacoustics for Ships. Volume 1 PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 651
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Book Description
In this two-volume monograph on the fundamentals of the generation of flow-induced sound and vibration, the subject area is developed from the essentials of fluid mechanics, vibration, and sound generation. This book provides a comprehensive and unified treatment of the mechanisms of flow-generated sound that occurs on ships and in marine machinery. Often the control of these mechanisms involves the essentials of both fluid mechanics and structural dynamics. Dynamical properties of various types of flow and of various structural elements that are typical of ship application are examined in detail beginning with the fundamentals of each physical source. Volume I provides for the treatment of elementary sources of flow noise and the principles of random vibration. Normal mode analysis is the cornerstone of the methods used to describe the behavior of flow induced vibration. Naval applications that involve turbulent boundary layer and lifting surface flows are discussed in Volume 2 (ADA150673). Aerodynamic noise sources, in so far as they occur anogously in underwater acoustics, are examined in detail for low Mach number marine application.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 651
Get Book Here
Book Description
In this two-volume monograph on the fundamentals of the generation of flow-induced sound and vibration, the subject area is developed from the essentials of fluid mechanics, vibration, and sound generation. This book provides a comprehensive and unified treatment of the mechanisms of flow-generated sound that occurs on ships and in marine machinery. Often the control of these mechanisms involves the essentials of both fluid mechanics and structural dynamics. Dynamical properties of various types of flow and of various structural elements that are typical of ship application are examined in detail beginning with the fundamentals of each physical source. Volume I provides for the treatment of elementary sources of flow noise and the principles of random vibration. Normal mode analysis is the cornerstone of the methods used to describe the behavior of flow induced vibration. Naval applications that involve turbulent boundary layer and lifting surface flows are discussed in Volume 2 (ADA150673). Aerodynamic noise sources, in so far as they occur anogously in underwater acoustics, are examined in detail for low Mach number marine application.
Author: William K. Blake
Publisher:
ISBN:
Category : Acoustical engineering
Languages : en
Pages : 668
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 623
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Book Description
Volume II includes the following topics: Turbulent-boundary-layer Structure and Surface Pressure--Equilibrium turbulent boundary layers, Analytical descriptions of the wall pressure field, Pressure fluctuations beneath equilibrium wall layers, and Turbulent flow over curved surfaces; Boundary-layer-induced Vibration and noise--Flow-excited structural vibration, Sound from flow-induced vibration, General rules for hydroacoustic similarity and noise control, and Direct radiation from turbulent boundary layers; The Hydroacoustics of Non-cavitating Lifting Surfaces--Fundamentals of lifting-surface noise; Noise from inflow upsteadiness; Vicous effects (Boundary-layer and vortex-wake development), Self-induced surface pressure fluctuations, Sound from trailing-edge flow, Flow-induced vibration and singing, and An illustration (Estimation of radiated noise from a hydrofoil); and Noise from Axial Flow Machinery--Elementary acoustics of rotating machinery, Design parameters of rotors as lifting surfaces, Theoretical free field acoustics of rotors, Self-noise from rotating machinery, Interaction noise in axial flow machines, and Rotating machinery in enclosures/duets.
Author: Genevieve Comte-Bellot
Publisher: Springer Science & Business Media
ISBN: 3642827586
Category : Science
Languages : en
Pages : 534
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Book Description
The Symposium "Aero-and Hydroacoustics" was held at the Ecole Centrale de Lyon, France, on 3rd - 6 July 1985, at the initiative of the International Union of Theoretical and Applied Mechanics (IUTAM) . The research topics discussed concerned the acoustics of unstable and turbulent flows and the noise generated by movable surfaces. Other subjects of interest were thermoacoustics, diffraction, and acoustic propagation through turbulence. Applications of numerical and experimental techniques to source diagnostics were discussed, as was active noise control. In Hydroacoustics the emphasis was on noise due to flow induced vibrations. There were 8 general invited lecturers and 43 other contributors, with 150 participants form 14 countries. Sufficient time was provided for discussions and social gatherings. For example, there was the opening of the high speed anechoic wind tunnel of the Centre Acoustique, and a welcome address given by the Mayor of Lyon in his historic City Hall. The organizing Committee of the Symposium wish to express their thanks to la Direction des Recherches Etudes et Techniques du Ministere des Armees (DRET), Ie Centre National de la Recherche Scientifique (CNRS), Ie Conseil General du Rhone, l'Association Universitaire de Mecanique (AUM), Ie Ministere de l'Environnement, for financial support. Le Groupement des Acousticiens de langue frangaise (GALF) helped advertise the meeting. The organizers are also indebted to the International Union of Theoretical and Applied Mechanics for providing travel subsidies to young scientists
Author: Raymond Fischer
Publisher: Springer Nature
ISBN: 3031551702
Category :
Languages : en
Pages : 453
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Book Description
Author: David W. Taylor Naval Ship Research and Development Center
Publisher:
ISBN:
Category : Shipbuilding
Languages : en
Pages : 638
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Book Description
Author: John Carlton
Publisher: Butterworth-Heinemann
ISBN: 0080971237
Category : Technology & Engineering
Languages : en
Pages : 539
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Book Description
The early development of the screw propeller. Propeller geometry. The propeller environment. The ship wake field, propeller performance characteristics.
Author: Gaye Bayrakci
Publisher: John Wiley & Sons
ISBN: 1119750911
Category : Science
Languages : en
Pages : 293
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Book Description
Noisy Oceans Measuring devices such as ocean bottom seismometers and hydrophones designed to detect earthquakes pick up many other signals. These were previously ignored as background noise from unknown sources, but advanced technology now allows insights into the noise created from icebergs, ships, hydrothermal vents, whales, rain, marine engineering, and more. Noisy Oceans: Monitoring Seismic and Acoustic Signals in the Marine Environment is a comprehensive guide to non-tectonic marine noise originating from different environmental, biological, and anthropogenic sources. Volume highlights include: Overview of marine soundscapes and their sources Existing and new methods for studying acoustic signals Case studies from around the world Spans disciplines from geology and geophysicists to biology Explores the impacts and implications of marine noise The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 660
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
