Handbook of the Acoustic Characteristics of Turbomachinery Cavities

Handbook of the Acoustic Characteristics of Turbomachinery Cavities

Author: Michael J. Lucas

Publisher: American Society of Mechanical Engineers

Published: 1997

Total Pages: 288

ISBN-13:

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A guide for mechanical engineers to identifying flow-induced noise and vibration sources within machinery that could cause catastrophic failure. Explains methods for computing frequencies for self-sustained oscillations, and presents formulae to calculate the acoustic resonant modes for ducts and cavities. Considers the general types of flow configurations that are known to produce self-sustained oscillations and includes a complete collection of models. Annotation copyrighted by Book News, Inc., Portland, OR


Book Synopsis Handbook of the Acoustic Characteristics of Turbomachinery Cavities by : Michael J. Lucas

Download or read book Handbook of the Acoustic Characteristics of Turbomachinery Cavities written by Michael J. Lucas and published by American Society of Mechanical Engineers. This book was released on 1997 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide for mechanical engineers to identifying flow-induced noise and vibration sources within machinery that could cause catastrophic failure. Explains methods for computing frequencies for self-sustained oscillations, and presents formulae to calculate the acoustic resonant modes for ducts and cavities. Considers the general types of flow configurations that are known to produce self-sustained oscillations and includes a complete collection of models. Annotation copyrighted by Book News, Inc., Portland, OR

The Acoustic Characteristics of Turbomachinery Cavities

The Acoustic Characteristics of Turbomachinery Cavities

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-08-04

Total Pages: 320

ISBN-13: 9781724680884

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Internal fluid flows are subject not only to self-sustained oscillations of the purely hydrodynamic type but also to the coupling of the instability with the acoustic mode of the surrounding cavity. This situation is common to turbomachinery, since flow instabilities are confined within a flow path where the acoustic wavelength is typically smaller than the dimensions of the cavity and flow speeds are low enough to allow resonances. When acoustic coupling occurs, the fluctuations can become so severe in amplitude that it may induce structural failure of engine components. The potential for catastrophic failure makes identifying flow-induced noise and vibration sources a priority. In view of the complexity of these types of flows, this report was written with the purpose of presenting many of the methods used to compute frequencies for self-sustained oscillations. The report also presents the engineering formulae needed to calculate the acoustic resonant modes for ducts and cavities. Although the report is not a replacement for more complex numerical or experimental modeling techniques, it is intended to be used on general types of flow configurations that are known to produce self-sustained oscillations. This report provides a complete collection of these models under one cover. Lucas, M. J. and Noreen, R. and Southerland, L. D. and Cole, J., III and Junger, M. Unspecified Center NASA-CR-4671, M-778, NAS 1.26:4671 NAS8-37360...


Book Synopsis The Acoustic Characteristics of Turbomachinery Cavities by : National Aeronautics and Space Administration (NASA)

Download or read book The Acoustic Characteristics of Turbomachinery Cavities written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-04 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Internal fluid flows are subject not only to self-sustained oscillations of the purely hydrodynamic type but also to the coupling of the instability with the acoustic mode of the surrounding cavity. This situation is common to turbomachinery, since flow instabilities are confined within a flow path where the acoustic wavelength is typically smaller than the dimensions of the cavity and flow speeds are low enough to allow resonances. When acoustic coupling occurs, the fluctuations can become so severe in amplitude that it may induce structural failure of engine components. The potential for catastrophic failure makes identifying flow-induced noise and vibration sources a priority. In view of the complexity of these types of flows, this report was written with the purpose of presenting many of the methods used to compute frequencies for self-sustained oscillations. The report also presents the engineering formulae needed to calculate the acoustic resonant modes for ducts and cavities. Although the report is not a replacement for more complex numerical or experimental modeling techniques, it is intended to be used on general types of flow configurations that are known to produce self-sustained oscillations. This report provides a complete collection of these models under one cover. Lucas, M. J. and Noreen, R. and Southerland, L. D. and Cole, J., III and Junger, M. Unspecified Center NASA-CR-4671, M-778, NAS 1.26:4671 NAS8-37360...

The Acoustic Characteristics of Turbomachinery Cavities

The Acoustic Characteristics of Turbomachinery Cavities

Author:

Publisher:

Published: 1995

Total Pages: 324

ISBN-13:

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Book Synopsis The Acoustic Characteristics of Turbomachinery Cavities by :

Download or read book The Acoustic Characteristics of Turbomachinery Cavities written by and published by . This book was released on 1995 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Guide to Information Sources in Engineering

Guide to Information Sources in Engineering

Author: Charles Lord

Publisher: Bloomsbury Publishing USA

Published: 2000-08-15

Total Pages: 360

ISBN-13: 0313009430

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The only source that focuses exclusively on engineering and technology, this important guide maps the dynamic and changing field of information sources published for engineers in recent years. Lord highlights basic perspectives, access tools, and English-language resources—directories, encyclopedias, yearbooks, dictionaries, databases, indexes, libraries, buyer's guides, Internet resources, and more. Substantial emphasis is placed on digital resources. The author also discusses how engineers and scientists use information, the culture and generation of scientific information, different types of engineering information, and the tools and resources you need to locate and access that material. Other sections describe regulations, standards and specifications, government resources, professional and trade associations, and education and career resources. Engineers, scientists, librarians, and other information professionals working with engineering and technology information will welcome this research


Book Synopsis Guide to Information Sources in Engineering by : Charles Lord

Download or read book Guide to Information Sources in Engineering written by Charles Lord and published by Bloomsbury Publishing USA. This book was released on 2000-08-15 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only source that focuses exclusively on engineering and technology, this important guide maps the dynamic and changing field of information sources published for engineers in recent years. Lord highlights basic perspectives, access tools, and English-language resources—directories, encyclopedias, yearbooks, dictionaries, databases, indexes, libraries, buyer's guides, Internet resources, and more. Substantial emphasis is placed on digital resources. The author also discusses how engineers and scientists use information, the culture and generation of scientific information, different types of engineering information, and the tools and resources you need to locate and access that material. Other sections describe regulations, standards and specifications, government resources, professional and trade associations, and education and career resources. Engineers, scientists, librarians, and other information professionals working with engineering and technology information will welcome this research

Fans

Fans

Author: Thomas Carolus

Publisher: Springer Nature

Published: 2023-01-13

Total Pages: 263

ISBN-13: 3658379596

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This textbook combines in a unique concept the design and construction of radial and axial fans with the problem of noise generation as well as its mitigation already in the fan development stage. The aim is to describe selected, easily applicable methods of aerodynamic design and noise prediction and to demonstrate their physical principles. Exercises with solutions facilitate understanding. The completely revised and expanded edition now also includes guidance on selecting fans for a given task, simulation-based optimization methods for fan design, and psychoacoustic methods that can be used to measure the quality of fan noise. This book is a translation of the original German 4th edition Ventilatoren by Thomas Carolus, published by Springer Fachmedien Wiesbaden GmbH, part of Springer Nature in 2020. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.


Book Synopsis Fans by : Thomas Carolus

Download or read book Fans written by Thomas Carolus and published by Springer Nature. This book was released on 2023-01-13 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook combines in a unique concept the design and construction of radial and axial fans with the problem of noise generation as well as its mitigation already in the fan development stage. The aim is to describe selected, easily applicable methods of aerodynamic design and noise prediction and to demonstrate their physical principles. Exercises with solutions facilitate understanding. The completely revised and expanded edition now also includes guidance on selecting fans for a given task, simulation-based optimization methods for fan design, and psychoacoustic methods that can be used to measure the quality of fan noise. This book is a translation of the original German 4th edition Ventilatoren by Thomas Carolus, published by Springer Fachmedien Wiesbaden GmbH, part of Springer Nature in 2020. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.

Internal Flow

Internal Flow

Author: E. M. Greitzer

Publisher: Cambridge University Press

Published: 2007-02-26

Total Pages: 739

ISBN-13: 1139451111

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This book describes the analysis and behaviour of internal flows encountered in propulsion systems, fluid machinery (compressors, turbines and pumps) and ducts (diffusers, nozzles and combustion chambers). The focus is on phenomena that are important in setting the performance of a broad range of fluid devices. The authors show that even for complex processes one can learn a great deal about the behaviour of such devices from a clear understanding and rigorous use of basic principles. Throughout the book they illustrate theoretical principles by reference to technological applications. The strong emphasis on fundamentals, however, means that the ideas presented can be applied beyond internal flow to other types of fluid motion. The book equips students and practising engineers with a range of new analytical tools. These tools offer enhanced interpretation and application of both experimental measurements and the computational procedures that characterize modern fluids engineering.


Book Synopsis Internal Flow by : E. M. Greitzer

Download or read book Internal Flow written by E. M. Greitzer and published by Cambridge University Press. This book was released on 2007-02-26 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the analysis and behaviour of internal flows encountered in propulsion systems, fluid machinery (compressors, turbines and pumps) and ducts (diffusers, nozzles and combustion chambers). The focus is on phenomena that are important in setting the performance of a broad range of fluid devices. The authors show that even for complex processes one can learn a great deal about the behaviour of such devices from a clear understanding and rigorous use of basic principles. Throughout the book they illustrate theoretical principles by reference to technological applications. The strong emphasis on fundamentals, however, means that the ideas presented can be applied beyond internal flow to other types of fluid motion. The book equips students and practising engineers with a range of new analytical tools. These tools offer enhanced interpretation and application of both experimental measurements and the computational procedures that characterize modern fluids engineering.

Centrifugal Pumps

Centrifugal Pumps

Author: Johann Friedrich Gülich

Publisher: Springer Nature

Published: 2019-11-22

Total Pages: 1299

ISBN-13: 3030147886

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This handbook summarizes the research results on hydraulic problems in centrifugal pump design and describes the state of the art in a comprehensive way. For this 4th edition, current research results of practical relevance were included. The selection and presentation of the material was oriented towards the needs of pump manufacturers, system planners and pump operators. Much space is devoted to understanding the physical relationships as essential knowledge for correct application. The latter is supported by more than 160 diagrams and tables for calculation and problem diagnosis . The book has been extensively updated. New additions: - A separate chapter on "Vibrations on vertical pumps". - Measurements of hydraulic exciter and impeller reaction forces - Alternating stresses and fatigue fractures of impellers - a critical study on the accuracy of numerical flow calculations of pumps - Design of inlet housings and double spirals for multistage pumps.


Book Synopsis Centrifugal Pumps by : Johann Friedrich Gülich

Download or read book Centrifugal Pumps written by Johann Friedrich Gülich and published by Springer Nature. This book was released on 2019-11-22 with total page 1299 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook summarizes the research results on hydraulic problems in centrifugal pump design and describes the state of the art in a comprehensive way. For this 4th edition, current research results of practical relevance were included. The selection and presentation of the material was oriented towards the needs of pump manufacturers, system planners and pump operators. Much space is devoted to understanding the physical relationships as essential knowledge for correct application. The latter is supported by more than 160 diagrams and tables for calculation and problem diagnosis . The book has been extensively updated. New additions: - A separate chapter on "Vibrations on vertical pumps". - Measurements of hydraulic exciter and impeller reaction forces - Alternating stresses and fatigue fractures of impellers - a critical study on the accuracy of numerical flow calculations of pumps - Design of inlet housings and double spirals for multistage pumps.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports

Author:

Publisher:

Published: 1995

Total Pages: 456

ISBN-13:

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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.


Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Noise Control Engineering Journal

Noise Control Engineering Journal

Author:

Publisher:

Published: 1999

Total Pages: 280

ISBN-13:

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Book Synopsis Noise Control Engineering Journal by :

Download or read book Noise Control Engineering Journal written by and published by . This book was released on 1999 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings of the ASME Noise Control and Acoustics Division

Proceedings of the ASME Noise Control and Acoustics Division

Author:

Publisher:

Published: 2004

Total Pages: 294

ISBN-13:

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Book Synopsis Proceedings of the ASME Noise Control and Acoustics Division by :

Download or read book Proceedings of the ASME Noise Control and Acoustics Division written by and published by . This book was released on 2004 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: