Sooting ethylene/air flames were investigated experimentally in a dual swirl gas turbine model combustor with good optical access at atmospheric pressure. The goals of the investigations were a detailed characterization of the soot formation and oxidation processes under gas turbine relevant conditions and the establishment of a data base for the validation of numerical combustion simulations. The flow field was measured by stereoscopic particle image velocimetry, the soot volume fractions by laser-induced incandescence, the heat release by OH chemiluminescence imaging and the temperatures by coherent anti-Stokes Raman scattering. Two flames are compared: a fuel-rich partially premixed flame with moderate soot concentrations and a second one with the same parameters but additional injection of secondary air. Instantaneous as well as average distributions of the measured quantities are presented and discussed. The measured soot distributions exhibit a high temporal and spatial dynamic. This behavior correlates with broad temperature probability density functions. With injection of secondary air downstream of the flame zone the distributions change drastically. The data set, including PDFs of soot concentration, temperature and flow velocity, is unique in combining different laser diagnostics with a combustor exhibiting a more challenging geometry than existing validation experiments.
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e-mail: klauspeter.geigle@dlr.de
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December 2011
Research Papers
Experimental Analysis of Soot Formation and Oxidation in a Gas Turbine Model Combustor Using Laser Diagnostics
Klaus Peter Geigle,
Klaus Peter Geigle
German Aerospace Center (DLR),
e-mail: klauspeter.geigle@dlr.de
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
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Jochen Zerbs,
Jochen Zerbs
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
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Markus Köhler,
Markus Köhler
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
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Michael Stöhr,
Michael Stöhr
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
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Wolfgang Meier
Wolfgang Meier
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
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Klaus Peter Geigle
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
e-mail: klauspeter.geigle@dlr.de
Jochen Zerbs
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
Markus Köhler
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
Michael Stöhr
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
Wolfgang Meier
German Aerospace Center (DLR),
Institute of Combustion Technology
, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany
J. Eng. Gas Turbines Power. Dec 2011, 133(12): 121503 (9 pages)
Published Online: September 12, 2011
Article history
Received:
April 14, 2011
Revised:
April 17, 2011
Online:
September 12, 2011
Published:
September 12, 2011
Citation
Geigle, K. P., Zerbs, J., Köhler, M., Stöhr, M., and Meier, W. (September 12, 2011). "Experimental Analysis of Soot Formation and Oxidation in a Gas Turbine Model Combustor Using Laser Diagnostics." ASME. J. Eng. Gas Turbines Power. December 2011; 133(12): 121503. https://doi.org/10.1115/1.4004154
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