Flame emittance images phase-locked to acoustic fluctuations have been acquired to study flame structure variations in lean premixed gas-fueled swirl-stabilized combustor systems used in industrial gas turbines. Images have been acquired through a specially-designed optical probe that makes use of the limited optical access typical of these combustors. A number of observations appear to be consistent under widely varying operating conditions. While flame stabilization was anticipated in the central vortex and outer recirculation zone of the nozzle, no optical emissions have been observed in the outer region. Oscillations in the flame emittance appear to be primarily in intensity rather than structure suggesting that the major contributor to acoustic coupling may be equivalence ratio variations rather than the motions of large scale fluid structures.
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ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
June 2–5, 1998
Stockholm, Sweden
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7864-4
PROCEEDINGS PAPER
Dynamic Flame Structure in a Low NOx Premixed Combustor
Torger J. Anderson
,
Torger J. Anderson
United Technologies Research Center, East Hartford, CT
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William A. Sowa
,
William A. Sowa
United Technologies Research Center, East Hartford, CT
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Stephen A. Morford
Stephen A. Morford
Pratt & Whitney, West Palm Beach, FL
Search for other works by this author on:
Torger J. Anderson
United Technologies Research Center, East Hartford, CT
William A. Sowa
United Technologies Research Center, East Hartford, CT
Stephen A. Morford
Pratt & Whitney, West Palm Beach, FL
Paper No:
98-GT-568, V003T06A054; 9 pages
Published Online:
December 23, 2014
Citation
Anderson, TJ, Sowa, WA, & Morford, SA. "Dynamic Flame Structure in a Low NOx Premixed Combustor." Proceedings of the ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations. Stockholm, Sweden. June 2–5, 1998. V003T06A054. ASME. https://doi.org/10.1115/98-GT-568
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