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Author : S. Majumdar
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (556 download)
Download or read book Noise Generation by the Interaction Between Ingested Turbulence and a Rotating Fan written by S. Majumdar and published by . This book was released on 1997 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Frank Fahy
Publisher : CRC Press
ISBN 13 : 1482289083
Total Pages : 656 pages
Book Rating : 4.4/5 (822 download)
Download or read book Advanced Applications in Acoustics, Noise and Vibration written by Frank Fahy and published by CRC Press. This book was released on 2018-09-03 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Applications in Acoustics, Noise and Vibration provides comprehensive and up-to-date overviews of knowledge, applications and research activities in a range of topics that are of current interest in the practice of engineering acoustics and vibration technology. The thirteen chapters are grouped into four parts: signal processing, acoustic modelling, environmental and industrial acoustics, and vibration. Following on from its companion volume Fundamentals of Noise and Vibration this book is based partly on material covered in a selection of elective modules in the second semester of the Masters programme in 'Sound and Vibration Studies' of the Institute of Sound and Vibration Research at the University of Southampton, UK and partly on material presented in the annual ISVR short course 'Advanced Course in Acoustics, Noise and Vibration'.
Author : William K. Blake
Publisher : Academic Press
ISBN 13 : 0128122900
Total Pages : 696 pages
Book Rating : 4.1/5 (281 download)
Download or read book Mechanics of Flow-Induced Sound and Vibration, Volume 2 written by William K. Blake and published by Academic Press. This book was released on 2017-08-14 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author : Stewart Glegg
Publisher : Elsevier
ISBN 13 : 0443218587
Total Pages : 724 pages
Book Rating : 4.4/5 (432 download)
Download or read book Aeroacoustics of Low Mach Number Flows written by Stewart Glegg and published by Elsevier. This book was released on 2023-09-26 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aeroacoustics of Low Mach Number Flows: Fundamentals, Analysis and Measurement, Second Edition provides a detailed introduction to sound radiation from subsonic flow over moving surfaces. This phenomenon is the most widespread cause of flow noise in engineering systems, including fan noise, rotor noise, wind turbine noise, boundary layer noise, airframe noise and aircraft noise. This fully updated new edition includes additional problems, illustrations and summary materials to support readers. New content covers Rapid Distortion theory (RDT), boundary layer wall pressure fluctuations, and flow induced sound at surfaces. Themes addressing non-compressible flows have also been added, offering coverage of hydroacoustic as well as aeroacoustic applications. New support materials for this edition include course outlines, problem sets, sample MATLAB codes and experimental data to be found at www.aeroacoustics.net. Addresses, in detail, sound from rotating blades, ducted fans, airframes, boundary layers, and more Presents theory in such a way that it can be used in computational methods and calculating sound levels Includes coverage of different experimental approaches to this subject
Author : Elena Ciappi
Publisher : Springer Nature
ISBN 13 : 3030648079
Total Pages : 400 pages
Book Rating : 4.0/5 (36 download)
Download or read book Flinovia—Flow Induced Noise and Vibration Issues and Aspects-III written by Elena Ciappi and published by Springer Nature. This book was released on 2021-04-29 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers the latest advances and innovations in the field of flow-induced vibration and noise, as presented by leading international researchers at the 3rd International Symposium on Flow Induced Noise and Vibration Issues and Aspects (FLINOVIA), which was held in Lyon, France, in September 2019. It explores topics such as turbulent boundary layer-induced vibration and noise, tonal noise, noise due to ingested turbulence, fluid-structure interaction problems, and noise control techniques. The authors’ backgrounds represent a mix of academia, government, and industry, and several papers include applications to important problems for underwater vehicles, aerospace structures and commercial transportation. The book offers a valuable reference guide for all those interested in measurement, modelling, simulation and reproduction of the flow excitation and flow induced structural response.
Author : Basil Edmond Robbins (II.)
Publisher :
ISBN 13 :
Total Pages : 127 pages
Book Rating : 4.:/5 (227 download)
Download or read book Turbulence Induced Noise in a Single Stage Axial Flow Fan written by Basil Edmond Robbins (II.) and published by . This book was released on 1974 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sound generated by the interaction of inlet turbulence with a rotating compressor blade row is investigated. Currently, there are two theories relating the rotor geometry and blade aerodynamics to the spectrum of the radiated sound. These theories are extended to include the cascade effect by incorporating a cascade aerodynamic response function for the unsteady lift on the blades into their analyses. To experimentally study this noise source, an aeroacoustic fan facility was designed and built. The parameters investigated include turbulence intensity and longitudinal integral length scale, blade speed, flow coefficient, and blade spacing.
Author :
Publisher :
ISBN 13 :
Total Pages : 980 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 354 pages
Book Rating : 4.3/5 (243 download)
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1993 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Elena Ciappi
Publisher : Springer
ISBN 13 : 3319767801
Total Pages : 365 pages
Book Rating : 4.3/5 (197 download)
Download or read book Flinovia—Flow Induced Noise and Vibration Issues and Aspects-II written by Elena Ciappi and published by Springer. This book was released on 2018-05-25 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the proceedings of the Second International Workshop on Flow Induced Noise and Vibration (FLINOVIA), which was held in Penn State, USA, in April 2016. The authors’ backgrounds represent a mix of academia, government, and industry, and several papers include applications to important problems for underwater vehicles, aerospace structures and commercial transportation. The book offers a valuable reference guide for all those working in the area of flow-induced vibration and noise. Flow induced vibration and noise (FIVN) remains a critical research topic. Even after over 50 years of intensive research, accurate and cost-effective FIVN simulation and measurement techniques remain elusive. This book gathers the latest research from some of the most prominent experts in the field. The book describes methods for characterizing wall pressure fluctuations, including subsonic and supersonic turbulent boundary layer flows over smooth and rough surfaces using computational methods like Large Eddy Simulation; for inferring wall pressure fluctuations using inverse techniques based on panel vibrations or holographic pressure sensor arrays; for calculating the resulting structural vibrations and radiated sound using traditional finite element methods, as well as advanced methods like Energy Finite Elements; for using scaling approaches to universally collapse flow-excited vibration and noise spectra; and for computing time histories of structural response, including alternating stresses.
Author : American Institute of Aeronautics and Astronautics
Publisher :
ISBN 13 :
Total Pages : 960 pages
Book Rating : 4.F/5 ( download)
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2007 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Acoustical Society of America
Publisher :
ISBN 13 :
Total Pages : 1678 pages
Book Rating : 4.F/5 ( download)
Download or read book The Journal of the Acoustical Society of America written by Acoustical Society of America and published by . This book was released on 2003 with total page 1678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ulrich W. Ganz
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (31 download)
Download or read book Analytical Investigation of Fan Tone Noise Due to Ingested Atmospheric Turbulence written by Ulrich W. Ganz and published by . This book was released on 1980 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (317 download)
Download or read book UHB Engine Fan Broadband Noise Reduction Study written by and published by . This book was released on 1995 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 664 pages
Book Rating : 4.F/5 ( download)
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1983 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721570577
Total Pages : 26 pages
Book Rating : 4.5/5 (75 download)
Download or read book Noise Generation by Fans with Supersonic Tip Speeds written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fan noise continues to be a significant issue for commercial aircraft engines and there still exists a requirement for improved understanding of the fundamental issues associated with fan noise source mechanisms. At the present time, most of the prediction methods identify the dominant acoustic sources to be associated with the stator vanes or blade trailing edges which are downstream of the fan face. However recent studies have shown that acoustic waves are significantly attenuated as they propagate upstream through a rotor, and if the appropriate corrections are applied, sound radiation from the engine inlet is significantly underpredicted. The prediction models can only be applied to fans with subsonic tip speeds. In contrast, most aircraft engines have fan tip speeds which are transonic and this implies an even higher attenuation for upstream propagating acoustic waves. Consequently understanding how sound propagates upstream through the fan is an important, and not well understood phenomena. The objective of this study is to provide improved insight into the upstream propagation effects through a rotor which are relevant to full scale engines. The focus of this study is on broadband fan noise generated by boundary layer turbulence interacting with the trailing edges of the fan blades. If this source mechanism is important upstream of the fan, the sound must propagate upstream through a transonic non uniform flow which includes large gradients and non linearities. Developing acoustic propagation models in this type of flow is challenging and currently limited to low frequency applications, where the frequency is of the same order as the blade passing frequency of the fan. For trailing edge noise, much higher frequencies are relevant and so a suitable approach needs to be developed, which is not limited by an unacceptably large computational effort. In this study we are in the process of developing a computational method which applies for the high frequencies of
Author : Viswanathan R. Vadari
Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (363 download)
Download or read book Generation of Broadband Noise by Turbulence in Centrifugal Fans written by Viswanathan R. Vadari and published by . This book was released on 1997 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 536 pages
Book Rating : 4.0/5 ( download)
Download or read book 15th AIAA Aeroacoustics Conference: 93-4401 - 93-4450 written by and published by . This book was released on 1993 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
