Advanced thermoacoustic analysis is now routinely used in gas turbine combustor development. A thermoacoustic approach based on a combination of numerical analysis (CFD and three-dimensional acoustics), acoustic network models, and dedicated measurements of acoustic flame response is well accepted across the industry. However, its application to specific combustor upgrade or development programs in “prediction mode” as opposed to “analysis mode” remains a challenge. This is mainly due to the large sensitivity of the complex methodology to key inputs, such as flame transfer functions, that can be only predicted in the burner design phase. This paper discusses an example where we made an effort to apply the thermoacoustic approach in predictive mode. The example refers to the upgrade of a first generation diffusion burner with a partially premix burner to achieve low emissions. Thermoacoustic instabilities were predicted as a limiting factor for combustor operation and thus a design parameter was identified to perform the thermoacoustic combustor tuning at engine level. A particular challenge of this development program was that no test rig was available. Therefore, the new premix burner was directly installed into a field engine where it was successfully tested.
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On the Use of Thermoacoustic Analysis for Robust Burner Design
Valter Bellucci,
Valter Bellucci
ALSTOM
, CH-5401 Baden, Switzerland
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Dariusz Nowak,
Dariusz Nowak
ALSTOM
, CH-5401 Baden, Switzerland
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Weiqun Geng,
Weiqun Geng
ALSTOM
, CH-5401 Baden, Switzerland
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Christian Steinbach
Christian Steinbach
ALSTOM
, CH-5401 Baden, Switzerland
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Valter Bellucci
ALSTOM
, CH-5401 Baden, Switzerland
Dariusz Nowak
ALSTOM
, CH-5401 Baden, Switzerland
Weiqun Geng
ALSTOM
, CH-5401 Baden, Switzerland
Christian Steinbach
ALSTOM
, CH-5401 Baden, SwitzerlandJ. Eng. Gas Turbines Power. May 2008, 130(3): 031506 (6 pages)
Published Online: April 3, 2008
Article history
Received:
May 23, 2007
Revised:
June 13, 2007
Published:
April 3, 2008
Citation
Bellucci, V., Nowak, D., Geng, W., and Steinbach, C. (April 3, 2008). "On the Use of Thermoacoustic Analysis for Robust Burner Design." ASME. J. Eng. Gas Turbines Power. May 2008; 130(3): 031506. https://doi.org/10.1115/1.2800348
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