A system for the active control of combustor pressure oscillations 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 (2.1 times) in the amplitude of the dominant pressure oscillations mode. Combustor emissions were not adversely affected by the control.
Issue Section:
Gas Turbines: Combustion, Fuels, and Emissions
1.
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, J. M.
, Rey
, N. M.
, Jacobson
, C. A.
, and Anderson
, T. J.
, 1998, “Active Control of Combustion Instability in a Liquid-Fueled Low-NOx Combustor
,” ASME Paper No. 98-GT-267.2.
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, T. S.
, Rosfjord
, T. J.
, McVey
, J. B.
, and Chiappetta
, L. M.
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, and Proscia
, W. M.
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, W. R.
, Vaudrey
, M. A.
, Eisenhauer
, B. A.
, Vandsburger
, U.
, and Fannin
, C. A.
, 1999, 37th AIAA Aerospace Sciences Meeting
, Reno
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, J. R.
, Vortmeyer
, N.
, Krause
, W.
, Hermann
, J.
, Hantschk
, C.-C.
, Zangl
, P.
, Gleis
, S.
, Vortmeyer
, D.
, and Orthmann
, A.
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, Jacobson
, C. A.
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, A. I.
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, P. G.
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,” Proceedings of Conference on Control Applications
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, T. C.
, and Zinn
, B. T.
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,” 38th AIAA Aerospace Sciences Meeting
, Reno
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, A.
, Jacobson
, C. A.
, Khibnik
, A. I.
, and Mehta
, P. G.
, 1999, “Linear and Nonlinear Analysis of Controlled Combustion Processes. Part I: Linear Analysis
,” Proceedings of Conference on Control Applications
, Hawaii
, Aug.11.
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, P. J.
, Dowling
, A. P.
, and Hooper
, N.
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,” J. Propul. Power
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.12.
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, M.
, Annaswamy
, A. M.
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, J. P.
, and Ghoniem
, A. F.
, 1997, “The Origin of Secondary Peaks With Active Control of Thermoacoustic Instability
,” Proceedings of the AIAA Joint Propulsion Conference
, Seattle
.Copyright © 2008
by American Society of Mechanical Engineers
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