This paper describes measurements of the dependence of lean blowout limits upon fuel composition for mixtures. Blowout limits were obtained at fixed approach flow velocity, reactant temperature, and combustor pressure at several conditions. Consistent with prior studies, these results indicate that the percentage of in the fuel dominates the mixture blowout characteristics. That is, flames can be stabilized at lower equivalence ratios, adiabatic flame temperatures, and laminar flame speeds with increasing percentage. In addition, the blowoff phenomenology qualitatively changes with hydrogen levels in the fuel, being very different for mixtures with levels above and below about 50%. It is shown that standard well stirred reactor based correlations, based upon a Damköhler number with a diffusivity ratio correction, can capture the effects of fuel composition variability on blowoff limits.
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July 2007
Technical Papers
Characterization of Fuel Composition Effects in Mixtures Upon Lean Blowout
Qingguo Zhang,
Qingguo Zhang
School of Aerospace Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332-0150
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David R. Noble,
David R. Noble
School of Aerospace Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332-0150
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Tim Lieuwen
Tim Lieuwen
School of Aerospace Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332-0150
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Qingguo Zhang
School of Aerospace Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332-0150
David R. Noble
School of Aerospace Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332-0150
Tim Lieuwen
School of Aerospace Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332-0150J. Eng. Gas Turbines Power. Jul 2007, 129(3): 688-694 (7 pages)
Published Online: December 26, 2006
Article history
Received:
August 15, 2006
Revised:
December 26, 2006
Citation
Zhang, Q., Noble, D. R., and Lieuwen, T. (December 26, 2006). "Characterization of Fuel Composition Effects in Mixtures Upon Lean Blowout." ASME. J. Eng. Gas Turbines Power. July 2007; 129(3): 688–694. https://doi.org/10.1115/1.2718566
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