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On the Noise From Jet Diffusers FREE

[+] Author Affiliations
Duane L. Stucky

Industrial Nucleonics Corp., Columbus, OH

S. M. Marco

Ohio State University, Columbus, OH

Paper No. 70-WA/GT-5, pp. V001T01A004; 10 pages
doi:10.1115/70-WA/GT-5
From:
  • ASME 1970 Winter Annual Meeting: GT Papers
  • ASME 1970 Winter Annual Meeting: GT Papers
  • New York, New York, USA, November 29–December 3, 1970
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-8004-3
  • Copyright © 1970 by ASME

abstract

This investigation has shown that the addition of diffusers of various lengths with a fixed cone angle to a fixed diameter circular jet nozzle increases the noise generation when delivering the same mass flow rate. For the diffusers investigated, the far field SPL was increased with increased diffusion. Also, increased diffusion decreased the directional variation of the SPL in the far field and moved the axial position of maximum noise generation closer to the jet exit. For the longest diffuser investigated, there was considerable noise contribution from the boundary layer inside the diffuser.

Copyright © 1970 by ASME
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