Open AccessActive Control of Combustion Instability in a Liquid–Fueled Low–NOx Combustor
Author(s) -
Jeffrey M. Cohen,
Nancy Rey,
C.A. Jacobson,
Torger J. Anderson
Publication year - 1998
Publication title -
volume 3: coal, biomass and alternative fuels; combustion and fuels; oil and gas applications; cycle innovations
Language(s) - English
Resource type - Conference proceedings
DOI - 10.1115/98-gt-267
Subject(s) - combustor , nox , nozzle , combustion , automotive engineering , actuator , environmental science , flow control (data) , flow (mathematics) , materials science , engineering , mechanics , mechanical engineering , chemistry , electrical engineering , physics , telecommunications , organic chemistry
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% (15 dB or 5.6X) while maintaining or reducing NOx and CO emissions levels.
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