RESEARCH PAPERS: Gas Turbines: Combustion & Fuels

Active Control of Combustion Instability in a Liquid-Fueled Low-NOx Combustor

[+] Author and Article Information
J. M. Cohen, N. M. Rey, C. A. Jacobson, T. J. Anderson

United Technologies Research Center, 411 Silver Lane, MS 129-19, East Hartford, CT 06108

J. Eng. Gas Turbines Power 121(2), 281-284 (Apr 01, 1999) (4 pages) doi:10.1115/1.2817118 History: Received April 01, 1998; Online December 03, 2007


A practical active control system for the mitigation of combustion instability has been designed and demonstrated in a lean, premixed, single-nozzle combustor at realistic engine operating conditions. A full-scale engine fuel nozzle was modified to incorporate a simple fuel flow actuator. Results indicate that the system was capable of reducing pressure fluctuations by 82 percent (15 dB or 5.6×) while maintaining or reducing NOx and CO emissions levels.

Copyright © 1999 by The American Society of Mechanical Engineers
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