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Experimental Study of Aeroacoustics in Supersonic Nozzles

[+] Author Affiliations
Kei Okamoto, Kazuyasu Shimura

Tokyo Metropolitan University, Tokyo, Japan

Paper No. FEDSM2002-31423, pp. 289-294; 6 pages
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 2: Symposia and General Papers, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3616-9 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME


In supersonic nozzles, changing pressure ratio varies not only flow conditions but also noises. In order to clarify the relationships between noises and flows (such as shock waves and separation), the present study was conducted using the Fourier Analysis of aerodynamic noises and the Schlieren method. From the investigation, it was found that when the flow was separated from one side of the nozzle, the peak of the spectrum of the frequency response was at around 2000Hz. However, when the flow was in the whole area, the peak of the spectrum was at around 5000Hz.

Copyright © 2002 by ASME



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