Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Boby Vortex Interaction Sound Generation And Destructive Interference
Download Boby Vortex Interaction Sound Generation And Destructive Interference full books in PDF, epub, and Kindle. Read online Boby Vortex Interaction Sound Generation And Destructive Interference ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781726218894 Total Pages :46 pages Book Rating :4.2/5 (188 download)
Book Synopsis Boby-Vortex Interaction, Sound Generation and Destructive Interference by : National Aeronautics and Space Administration (NASA)
Download or read book Boby-Vortex Interaction, Sound Generation and Destructive Interference written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-27 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is generally recognized that interaction of vortices with downstream blades is a major source of noise production. To analyze this problem numerically, a two-dimensional model of inviscid flow together with the method of matched asymptotic expansions is proposed. The method of matched asymptotic expansions is used to match the inner region of incompressible flow to the outer region of compressible flow. Because of incompressibility, relatively simple numerical methods are available to treat multiple vortices and multiple bodies of arbitrary shape. Disturbances from vortices and bodies propagate outward as sound waves. Due to their interactions, either constructive or destructive interference may result. When it is destructive, the combined sound intensity can be reduced, sometimes substantially. In addition, an analytical solution to sound generation by the cascade-vonex interaction is given.Kao, Hsiao C.Glenn Research CenterNUMERICAL ANALYSIS; AERODYNAMIC NOISE; TWO DIMENSIONAL MODELS; VORTICES; NOISE REDUCTION; COMPRESSIBLE FLOW; INCOMPRESSIBLE FLOW; SOUND WAVES...
Book Synopsis Boby-Vortex Interaction, Sound Generation and Destructive Interference by :
Download or read book Boby-Vortex Interaction, Sound Generation and Destructive Interference written by and published by . This book was released on 2000 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Vortex/body Interaction and Sound Generation in Low-speed Flow by : Hsiao C. Kao
Download or read book Vortex/body Interaction and Sound Generation in Low-speed Flow written by Hsiao C. Kao and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AIAA Journal by : American Institute of Aeronautics and Astronautics
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2002 with total page 1302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sound Generation by Interaction of Two Inviscid Two-dimensional Vortices by : S. K. Tang
Download or read book Sound Generation by Interaction of Two Inviscid Two-dimensional Vortices written by S. K. Tang and published by . This book was released on 1997 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory of Vortex Sound by : M. S. Howe
Download or read book Theory of Vortex Sound written by M. S. Howe and published by Cambridge University Press. This book was released on 2003 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of contents
Book Synopsis The Directionality of Blade-vortex Interaction Noise by : Todd Darwin Ringler
Download or read book The Directionality of Blade-vortex Interaction Noise written by Todd Darwin Ringler and published by . This book was released on 1992 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cylindrical Sound Wave Generated by Shock-vortex Interaction by : Herbert S. Ribner
Download or read book Cylindrical Sound Wave Generated by Shock-vortex Interaction written by Herbert S. Ribner and published by . This book was released on 1985 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanics written by and published by . This book was released on 2002 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Vortex Modeling on Blade-Vortex Interaction Noise Prediction by :
Download or read book The Effects of Vortex Modeling on Blade-Vortex Interaction Noise Prediction written by and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of a blade vortex interaction noise prediction scheme, based on CAMRAD/JA, FPR and RAPP, quantifies the effects of errors and assumptions in the modeling of the helicopter's shed vortex on the acoustic predictions. CAMRAD/JA computes the wake geometry and inflow angles that are used in FPR to solve for the aerodynamic surface pressures. RAPP uses these surface pressures to predict the acoustic pressure. Both CAMRAD/JA and FPR utilize the Biot-Savart Law to determine the influence of the vortical velocities on the blade loading and both codes use an algebraic vortex model for the solid body rotation of the vortex core. Large changes in the specification of the vortex core size do not change the inplane wake geometry calculated by CAMRAD/JA and only slighty affect the out-of-plane wake geometry. However, the aerodynamic surface pressure calculated by FPR changes in both magnitude and character with small changes to the core size used by the FPR calculations. This in turn affects the acoustic predictions. Shifting the CAMRAD/JA wake geometry away from the rotor plane by 1/4 chord produces drastic changes in the acoustic predictions indicating that the prediction of acoustic pressure is extremely sensitive to the miss distance between the vortex and the blade and that this distance must be calulated as accurately as possible for acceptable noise predictions. The inclusion or exclusion of a vortex in the FPR-RAPP calculation allows for the determination of the relative importance of that vortex as a BVI noise source. (AN).
Book Synopsis On Sound Generation by the Kirchhoff Vortex by :
Download or read book On Sound Generation by the Kirchhoff Vortex written by and published by . This book was released on 1998 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Investigation of Blade Vortex Interaction Noise by : See-Ho Wong
Download or read book Computational Investigation of Blade Vortex Interaction Noise written by See-Ho Wong and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigation on 2D Blade-vortex-interaction Noise by : F. Obermeier
Download or read book Experimental Investigation on 2D Blade-vortex-interaction Noise written by F. Obermeier and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On the Sound Generated by the Interaction of a Vortex and a Shock Wave by : M. A. Hollingsworth
Download or read book On the Sound Generated by the Interaction of a Vortex and a Shock Wave written by M. A. Hollingsworth and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sound Vortex Interaction in Pipes by : Iain David Jeffrey Dupère
Download or read book Sound Vortex Interaction in Pipes written by Iain David Jeffrey Dupère and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sound Generation in Impinging Vortex on the Chamfered Step by : Ki-Wahn Ryu
Download or read book Sound Generation in Impinging Vortex on the Chamfered Step written by Ki-Wahn Ryu and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Invistigation of Ring Vortex/cylinder Interaction by : Gregory Thadeus Szczepkowski
Download or read book An Experimental Invistigation of Ring Vortex/cylinder Interaction written by Gregory Thadeus Szczepkowski and published by . This book was released on 1989 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
