Acoustic aspects of a radial diffuser

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Authors

  • J. De KRASINSKI Department of Mechanical Engineering, University of Calgary, Canada
  • W. WAWSZCZAK Department of Mechanical Engineering, University of Calgary, Canada
  • S. SUN Department of Mechanical Engineering, University of Calgary, Canada

Abstract

The flow in a supersonic radial-diffuser is investigated experimentally and the results of the experiments are discussed in the light of existing theories From such an analysis it is concluded that a better understanding of this particular diffuser, which can be used as a sound attenuator, may lead to other applications in the field of propulsive units and jet flows.

References

[1] M. J. LIGHTHILL, On Sound Generated Aerodynamically. I. General Theory, Proceedings of the Royal Society, Ser. A, 211, 564-587 (1952).

[2] M. J. LIGHTHILL, On Sound Generated Aerodynamically. II. Turbulence as a Source of Sound, Proceedings of the Royal Society, Ser. A, 222, 1-32 (1954).

[3] G. M. LILLEY, The Generation and Radiation of Supersonic Jet Noise. IV. Theory of Turbulence Generated Jet Noise, Noise Radiation from Upstream Sources and Combustion Noise, United States Air Force Aero Propulsion Laboratory, TR-72-53, July 1972.

[4] A. POWELL, Theory of Vortex Sound, Journal of the Acoustical Society of America, 36, 1, 177-195 (1964).