Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-18T15:37:26.879Z Has data issue: false hasContentIssue false

Aerodynamic noise

Published online by Cambridge University Press:  29 March 2006

M. J. Fisher
Affiliation:
Institute of Sound and Vibration Research, The University, Southampton
M. V. Lowson
Affiliation:
Department of Transport Technology, Loughborough University

Abstract

A symposium on aerodynamic noise was held at Loughborough University from 14 to 17 September 1970 under the sponsorship of the Royal Aeronautical Society and the British Acoustical Society. The objective of the meeting was to focus attention on unsolved theoretical and experimental problems which will require attention over the next few years. Areas which were covered included jet noise, nonlinear acoustics, rotor noise, and diffraction theory. The symposium was successful in bringing together several new themes in aerodynamic noise research. The most significant of these were the existence of a degree of order in turbulent jet flows, and the dominant effect of inflow conditions on rotor noise radiation. In addition an improved and unified basis for jet noise theory seems to be evolving.

Type
Research Article
Copyright
© 1971 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Berktay, H. O. 1965 Possible exploitation of non-linear acoustics in underwater transmitting applications J. Sound Vib. 2, 435461.Google Scholar
Csanady, G. T. 1966 The effect of mean velocity variations on jet noise J. Fluid Mech. 26, 183197.Google Scholar
Ffowcs Williams, J. E. 1963 The noise from turbulence convected at high speed. Phil. Trans A 255, 469503.Google Scholar
Ffowcs Williams, J. E. & Gordon, C. G. 1965 Noise of highly turbulent exhaust jets at low exhaust-speeds AIAAJ. 3, 791793.Google Scholar
Ffowcs Williams, J. E. & Hawkins, D. C. 1969 Theory relating to the noise of rotating machinery J. Sound Vib. 10, 1021.Google Scholar
Hay, J. A. & Rose, E. G. 1970 In-flight shock cell noise J. Sound Vib. 11, 411420.Google Scholar
Kaji, S. & Okazaki, T. 1970a Propagation of sound through a blade row J. Sound. Vib. 11, 339376.Google Scholar
Kaki, S. & Okazaki, T. 1970b Generation of sound by rotor-stator interaction J. Sound Vib. 13, 281308.Google Scholar
Lighthill, M. J. 1952 On sound generated aerodynamically. I. General theory. Proc. Roy. Soc A 211, 564587.Google Scholar
Lighthill, M. J. 1954 On sound generated aerodynamically. II. Turbulence as a source of sound. Proc. Roy. Soc A 222, 132.Google Scholar
Lighthill, M. J. & Ffowcs Williams, J. E. 1967 Aerodynamically Generated Sound. Film in Fluid Mechanics Film series.
Lansing, D. L. 1969 Exact solution for radiation of sound from a semi-infinite circular duct with application to fan and compressor noise. NASA SP-228, 323334.Google Scholar
Lowson, M. V. 1965 The sound field for singularities in motion. Proc. Roy. Soc A 286, 559572.Google Scholar
Lowson, M. V. & Ollerhead, J. B. 1969 A theoretical study of helicopter noise J. Sound Vib. 9, 197222.Google Scholar
Mani, R. & Horvay, G. 1970 Sound transmission through blade rows J. Sound. Vib. 12, 5984.Google Scholar
Moffett, M. B., Westervelt, P. J. & Beyer, R. T. 1970 Large amplitude pulse propagation—a transient effect J. Acoust. Soc. Am. 47, 14731474.Google Scholar
Phillips, O. M. 1960 On the generation of sound by supersonic turbulent shear layers J. Fluid Mech. 9, 128.Google Scholar
Powell, A. 1953a On the mechanism of choked jet noise. Proc. Phys. Soc. B 66, 10391056.Google Scholar
Powell, A. 1953b The noise of choked jets J. Acoust. Soc. Am. 25, 385389.Google Scholar
Powell, A. 1960 Concerning the noise of turbulent jets J. Acoust. Soc. Am. 32, 16091612.Google Scholar
Ribner, H. S. & Macgregob, I. 1968 The elusive Doppler shift in jet noise. Proc. Sixth Int. Cong. Acoustics, Tokyo. Paper F-3–8.Google Scholar
Tyler, J. M. & Sofrin, T. G. 1962 Axial flow compressor noise studies Trans. Soc. Auto. Eng. 70, 309332.Google Scholar
Westley, R. 1968 Choked Jet Noise. Film available on loan from Aero. Res. Counc.