Turbofan Duct Propagation Model
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Turbofan Duct Propagation Model
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-11
Turbofan Duct Propagation Model written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-11 with categories.
The CDUCT code utilizes a parabolic approximation to the convected Helmholtz equation in order to efficiently model acoustic propagation in acoustically treated, complex shaped ducts. The parabolic approximation solves one-way wave propagation with a marching method which neglects backwards reflected waves. The derivation of the parabolic approximation is presented. Several code validation cases are given. An acoustic lining design process for an example aft fan duct is discussed. It is noted that the method can efficiently model realistic three-dimension effects, acoustic lining, and flow within the computational capabilities of a typical computer workstation.Lan, Justin H. and Posey, Joe W. (Technical Monitor)Langley Research CenterTURBOFANS; ACOUSTIC PROPAGATION; THREE DIMENSIONAL MODELS; COMPUTER TECHNIQUES; SOUND WAVES; REFLECTED WAVES; WAVE PROPAGATION; HELMHOLTZ EQUATIONS; LINING PROCESSES; COMPUTER SYSTEMS PERFORMANCE; WORKSTATIONS
Turbofan Duct Propagation Model
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Author : Justin H. Lan
language : en
Publisher:
Release Date : 2001
Turbofan Duct Propagation Model written by Justin H. Lan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Aerodynamic noise categories.
Advanced Turbofan Duct Liner Concepts
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Author :
language : en
Publisher:
Release Date : 1999
Advanced Turbofan Duct Liner Concepts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Aeroacoustics Of Flight Vehicles Noise Control
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Author : Harvey H. Hubbard
language : en
Publisher:
Release Date : 1991
Aeroacoustics Of Flight Vehicles Noise Control written by Harvey H. Hubbard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aerodynamic noise categories.
Aeroacoustics Of Flight Vehicles
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Author : Harvey H. Hubbard
language : en
Publisher:
Release Date : 1991
Aeroacoustics Of Flight Vehicles written by Harvey H. Hubbard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aerodynamic noise categories.
Nasa Reference Publication
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Author :
language : en
Publisher:
Release Date : 1991
Nasa Reference Publication written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Astronautics categories.
Handbook Of Noise And Vibration Control
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Author : Malcolm J. Crocker
language : en
Publisher: John Wiley & Sons
Release Date : 2007-10-05
Handbook Of Noise And Vibration Control written by Malcolm J. Crocker and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-10-05 with Technology & Engineering categories.
Two of the most acclaimed reference works in the area of acoustics in recent years have been our Encyclopedia of Acoustics, 4 Volume set and the Handbook of Acoustics spin-off. These works, edited by Malcolm Crocker, positioned Wiley as a major player in the acoustics reference market. With our recently published revision of Beranek & Ver's Noise and Vibration Control Engineering, Wiley is a highly respected name in the acoustics business. Crocker's new handbook covers an area of great importance to engineers and designers. Noise and vibration control is one largest areas of application of the acoustics topics covered in the successful encyclopedia and handbook. It is also an area that has been under-published in recent years. Crocker has positioned this reference to cover the gamut of topics while focusing more on the applications to industrial needs. In this way the book will become the best single source of need-to-know information for the professional markets.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1992
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aeronautics categories.
Fundamentals Of Aeroacoustics With Applications To Aeropropulsion Systems
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Author : Xiaofeng Sun
language : en
Publisher: Elsevier
Release Date : 2020-10-14
Fundamentals Of Aeroacoustics With Applications To Aeropropulsion Systems written by Xiaofeng Sun and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-14 with Technology & Engineering categories.
Fundamentals of Aeroacoustics with Applications to Aeropropulsion Systems from the Shanghai Jiao Tong University Press Aerospace series, is the go-to reference on the topic, providing a modern take on the fundamental theory and applications relating to prediction and control of all major noise sources in aeropropulsion systems. This important reference compiles the latest knowledge and research advances, considering both the physics of aerodynamic noise generation in aero-engines and related numerical prediction techniques. Additionally, it introduces new vortex sound interaction models, a transfer element method, and a combustion instability model developed by the authors. Focusing on propulsion systems from inlet to exit, including combustion noise, this new resource will aid graduate students, researchers, and R&D engineers in solving the aircraft noise problems that currently challenge the industry. - Updates the knowledge-base on the sound source generated by aeropropulsion systems, from inlet to exit, including combustion noise - Covers new aerodynamic noise control technology aimed at the low-noise design of next generation aero-engines, including topics such as aerodynamic noise and aero-engine noise control - Includes new, cutting-edge models and methods developed by an author team led by the editor-in-chief of the Chinese Journal of Aeronautics and Astronautics - Considers both the physics of aerodynamic noise generation in aero-engines and related numerical prediction techniques
Duct Acoustics
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Author : Erkan Dokumacı
language : en
Publisher: Cambridge University Press
Release Date : 2021-05-13
Duct Acoustics written by Erkan Dokumacı and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-13 with Science categories.
Understand topics ranging from the foundations of duct acoustics to acoustic design of mufflers and silencers with this hands-on reference.