Active Control of Combustion Instability in a Liquid–Fueled Sector Combustor FREE

[+] Author Affiliations
J. R. Hibshman, J. M. Cohen, A. Banaszuk, T. J. Anderson, H. A. Alholm

United Technologies Research Center, East Hartford, CT

Paper No. 99-GT-215, pp. V002T02A030; 8 pages
  • ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Indianapolis, Indiana, USA, June 7–10, 1999
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7859-0
  • Copyright © 1999 by ASME


A system for the active control of combustion instabilities in liquid-fueled, lean, premixed combustors was demonstrated in a three-nozzle sector combustor, using full-scale engine hardware. Modulation of a portion of the premixed fuel flow led to a reduction of 6.5 dB (2.1X) in the amplitude of the dominant instability mode. Combustor emissions were not adversely affected by the control.

Copyright © 1999 by ASME
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