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Aeroacoustics of Low Mach Number Flows

2023-09-26 Technology & Engineering
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Release : 2023-09-26
Genre : Technology & Engineering
Kind : eBook
Book Rating : 587/5 ( reviews)

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Book Synopsis Aeroacoustics of Low Mach Number Flows by : Stewart Glegg

Download or read book Aeroacoustics of Low Mach Number Flows written by Stewart Glegg. This book was released on 2023-09-26. 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

Aeroacoustics of Low Mach Number Flows

2017-02-15 Science
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Release : 2017-02-15
Genre : Science
Kind : eBook
Book Rating : 930/5 ( reviews)

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Book Synopsis Aeroacoustics of Low Mach Number Flows by : Stewart Glegg

Download or read book Aeroacoustics of Low Mach Number Flows written by Stewart Glegg. This book was released on 2017-02-15. Available in PDF, EPUB and Kindle. Book excerpt: Aeroacoustics of Low Mach Number Flows: Fundamentals, Analysis, and Measurement provides a comprehensive treatment of sound radiation from subsonic flow over moving surfaces, which is the most widespread cause of flow noise in engineering systems. This includes fan noise, rotor noise, wind turbine noise, boundary layer noise, and aircraft noise. Beginning with fluid dynamics, the fundamental equations of aeroacoustics are derived and the key methods of solution are explained, focusing both on the necessary mathematics and physics. Fundamentals of turbulence and turbulent flows, experimental methods and numerous applications are also covered. The book is an ideal source of information on aeroacoustics for researchers and graduate students in engineering, physics, or applied math, as well as for engineers working in this field. Supplementary material for this book is provided by the authors on the website www.aeroacoustics.net. The website provides educational content designed to help students and researchers in understanding some of the principles and applications of aeroacoustics, and includes example problems, data, sample codes, course plans and errata. The website is continuously being reviewed and added to. Explains the key theoretical tools of aeroacoustics, from Lighthill’s analogy to the Ffowcs Williams and Hawkings equation Provides detailed coverage of sound from lifting surfaces, boundary layers, rotating blades, ducted fans and more Presents the fundamentals of sound measurement and aeroacoustic wind tunnel testing

Computational Aeroacoustics

2012-12-06 Science
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Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 420/5 ( reviews)

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Book Synopsis Computational Aeroacoustics by : Jay C. Hardin

Download or read book Computational Aeroacoustics written by Jay C. Hardin. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: Computational aeroacoustics is rapidly emerging as an essential element in the study of aerodynamic sound. As with all emerging technologies, it is paramount that we assess the various opportuni ties and establish achievable goals for this new technology. Essential to this process is the identification and prioritization of fundamental aeroacoustics problems which are amenable to direct numerical siIn ulation. Questions, ranging from the role numerical methods play in the classical theoretical approaches to aeroacoustics, to the correct specification of well-posed numerical problems, need to be answered. These issues provided the impetus for the Workshop on Computa tional Aeroacoustics sponsored by ICASE and the Acoustics Division of NASA LaRC on April 6-9, 1992. The participants of the Work shop were leading aeroacousticians, computational fluid dynamicists and applied mathematicians. The Workshop started with the open ing remarks by M. Y. Hussaini and the welcome address by Kristin Hessenius who introduced the keynote speaker, Sir James Lighthill. The keynote address set the stage for the Workshop. It was both an authoritative and up-to-date discussion of the state-of-the-art in aeroacoustics. The presentations at the Workshop were divided into five sessions - i) Classical Theoretical Approaches (William Zorumski, Chairman), ii) Mathematical Aspects of Acoustics (Rodolfo Rosales, Chairman), iii) Validation Methodology (Allan Pierce, Chairman), iv) Direct Numerical Simulation (Michael Myers, Chairman), and v) Unsteady Compressible Flow Computa tional Methods (Douglas Dwoyer, Chairman).

Computational Aeroacoustics in Low Mach Number Flows

2015-08-10
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Release : 2015-08-10
Genre :
Kind : eBook
Book Rating : 378/5 ( reviews)

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Book Synopsis Computational Aeroacoustics in Low Mach Number Flows by : Pradera-Mallabiabarrena Ainara

Download or read book Computational Aeroacoustics in Low Mach Number Flows written by Pradera-Mallabiabarrena Ainara. This book was released on 2015-08-10. Available in PDF, EPUB and Kindle. Book excerpt: This work studies a flexible methodology to predict radiated noise. The main contributions of this work are focused on the way flow parameters are acquired in fluid dynamics simulations are synthesised, stored and later used to predict radiated noise, but also on the procedure considered in the radiation calculations. The methodology has been restricted to low Mach number flows where the noise generation is dominated by the interaction of the flow with a surface at least one of whose typical dimensions is short compared to the wavelength of intereset, known as a compact source. The radiation calculations may employ purely analytical methods or numerical methods, depending on the application. Finally, the requirements in data storage and transfer are significantly reduced by using this method. Besides, if the flow remains essentially the same, the Computational Fluid Dynamics simulation should not need to be repeated in case different acoustic scenarios should be studied.

Aeroacoustic Computation of Low Mach Number Flow

1996 Turbines
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Release : 1996
Genre : Turbines
Kind : eBook
Book Rating : 492/5 ( reviews)

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Book Synopsis Aeroacoustic Computation of Low Mach Number Flow by : Kristian Skriver Dahl

Download or read book Aeroacoustic Computation of Low Mach Number Flow written by Kristian Skriver Dahl. This book was released on 1996. Available in PDF, EPUB and Kindle. Book excerpt:

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