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Attenuation of Acoustic Energy Across a Turbine Stage With Subsonic Relative Flow FREE

[+] Author Affiliations
Keith Bekofske

General Electric Research and Development Center, Schenectady, NY

Paper No. 75-GT-17, pp. V01AT01A016; 8 pages
doi:10.1115/75-GT-17
From:
  • ASME 1975 International Gas Turbine Conference and Products Show
  • Volume 1A: General
  • Houston, Texas, USA, March 2–6, 1975
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7976-4
  • Copyright © 1975 by ASME

abstract

The attenuation of sound energy propagating through a turbine is analyzed using an actuator disk theory. The analysis is restricted to low frequency disturbances and subsonic relative flow. Mach number changes and flow turning across a stage element are taken into account. Results indicate that the attenuation of acoustic energy across a typical turbine stage is at least 10 dB.

Copyright © 1975 by ASME
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