Acoustic excitation
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Acoustic excitation a promising new means of controlling shear layers

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Published by Lewis Research Center in Cleveland, Ohio .
Written in English


  • Turbulent boundary layer.

Book details:

Edition Notes

StatementJames R. Stone and Daniel J. McKinzie, Jr.
SeriesNASA technical memorandum -- 83772.
ContributionsMcKinzie, Daniel J., Lewis Research Center.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL17666587M

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Feasibility of Parametric Excitation of Acoustic Resonators [Larry P. Varnadore] on *FREE* shipping on qualifying offers. This is a NAVAL POSTGRADUATE SCHOOL MONTEREY CA report procured by the Pentagon and made available for public release. It has been reproduced in the best form available to the Pentagon. It is not spiral-boundAuthor: Larry P. Varnadore.   Modal measurements were done with excitation on a frame of the fuselage at the propeller plane. The modes were estimated for the individual components; fuselage, trimpanels, floorpanels, and soundfield in the cabin. The modes of the fuselage were compared with the acoustic models in the cabin concerning possible coupling : Lars Gustavsson. Acoustic Control of Turbulent Jets (Foundations of Engineering Mechanics) - Kindle edition by Ginevsky, A.S., Vlasov, Y.V., Karavosov, R.K.. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Acoustic Control of Turbulent Jets (Foundations of Engineering Mechanics).Manufacturer: Springer. An Introduction to Acoustics S.W. Rienstra & A. Hirschberg Eindhoven University of Technology 28 Nov This is an extended and revised edition of IWDE Comments and corrections are gratefully accepted. This file may be used and printed, but for personal or educational purposes only. c S.W. Rienstra & A. Hirschberg

The book begins by reviewing the data on elementary particles, absorption of penetrating radiation in a substance, and the mechanisms of acoustic radiation excitation. The next seven chapters present a theoretical treatment of thermoradiation sound generation in condensed media under the action of modulated penetrating radiation and radiation. Jerome, TW, Shepherd, MR & Hambric, SA , Acoustic excitation of a flanged joint. in G Kerschen (ed.), Nonlinear Dynamics - Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics vol. 1, Springer New York LLC, pp. , 36th IMAC, A Conference and Exposition on Structural Dynamics, , Orlando, United Author: Trevor W. Jerome, Micah R. Shepherd, Stephen A. Hambric. To understand the process of acoustic interaction between solid structures and fluids, it is essential to appreciate the wave nature of responses of both media to time-dependent disturbances from equilibrium, whether these are transient or continuous. and circular cylindrical shells to excitation by harmonic point forces. The mobility and. Results of experimental research on aerodynamic and acoustic control of subsonic turbulent jets by acoustic excitation are presented. It was demonstrated that these control methods, originated by authors, not only can intensify mixing (by acoustic irradiation at low frequency), but also notably.

Resonance Acoustic Spectroscopy deals with the analysis of waves generated in an elastic body by a plane harmonic acoustic wave. It is the first monograph to treat new analytical and experimental methods for the investigation of the excitation, propagation and re-radiation of elastic waves in solid, thick-walled and thin-walled elastic material is presented systematically.   For cases (c) and (d), the dimensionless pressure amplitude of the acoustic mode reaches a maximum at a Strouhal number similar to that of the turbulence broadband peak measured in the separation bubble downstream of the T-junction corner. Cases (a) and (b) exhibit a different type of flow-acoustic by: 7. ponent at the excitation acoustic frequency, and displays an increase. of the mean value. The mean convecti ve heat transfer to the fuel. surface, by virtue of the blowing effect, is also raised. II. Electromagnetically excited acoustic noise is audible sound directly produced by materials vibrating under the excitation of electromagnetic examples of electromagnetically excited acoustic noise include the hum of transformers, the whine of some rotating electric machines, or the buzz of fluorescent hissing of high voltage transmission lines is due to corona discharge.