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TECHNICAL PAPERS: Gas Turbines: Combustion and Fuel

Experimental and Numerical Studies of Two-Stage Ethane-Air Flames

[+] Author and Article Information
M. M. Y. Waly, S. C. Li, F. A. Williams

Center for Energy and Combustion Research, Department of Applied Mechanical and Aerospace Engineering, University of California, San Diego, La Jolla, CA 92093-0411

J. Eng. Gas Turbines Power 122(4), 651-658 (May 15, 2000) (8 pages) doi:10.1115/1.1287164 History: Received March 09, 1999; Revised May 15, 2000
Copyright © 2000 by ASME
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References

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Trumpy,  D. K., Uyehara,  O. A., and Myers,  P. S., 1969, “The Preknock Kinetics of Ethane in a Spark Ignition Engine,” SAE Trans., 78, pp. 1849–1874.
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Ravikrishna,  R. V., and Laurendeau,  N. M., 1998, “Brief Communication: Laser-Saturated Fluorescence Measurements of Nitric Oxide in Laminar Counterflow Diffusion Flames,” Combust. Flame, 113, pp. 473–475.
Drake, M. C., Ratclffe, J. W., Blint, R. J., Carter, A. D., and Laurendeau, N. M., 1990, “Measurements and Modeling of Flame-Front NO Formation and Superequilibrium Radical Concentrations in Laminar High-Pressure Premixed Flames,” Twenty-Third Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, pp. 387–395.
Li,  S. C., Ilincic,  N., and Williams,  F. A., 1997, “Reduction of NOx Formation by Water Sprays in Strain Two-Stage Flames,” ASME J. Eng. Gas Turbines Power, 119, p. 836.
Li, S. C., and Williams, F. A., 1998, “Experimental and Numerical Studies of NOx Formation in Two-Stage Methane-Air Flames,” ASME Paper 98-GT-73.
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Smooke, M. D., Crump, J., Seshadri, K., and Giovangigli, V., 1990, “Comparison between Experimental Measurements and Numerical Calculations of the Structure of Counterflow, Diluted, Methane-Air, Premixed Flames,”Twenty-Third Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, pp. 463–470.
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Figures

Grahic Jump Location
Comparison between measurement and prediction for concentration profiles of intermediate species C2H2 and computed concentration profiles of radicals H, OH, and O for strain rate a=90 s−1 at different equivalence ratios: (a) Φ=1.65; (b) Φ=1.85; (c) Φ=2.20; (d) Φ=2.65.
Grahic Jump Location
Predicted concentration profiles of NO, CH, N, and HCN for strain rate a=90 s−1 at different equivalence ratios: (a) Φ=1.65; (b) Φ=1.85; (c) Φ=2.20; (d) Φ=2.65.
Grahic Jump Location
Reaction path for ethane in a two-stage ethane-air flame with equivalence ratio Φ=1.65 and strain rate a=90 s−1
Grahic Jump Location
Comparison between measurement and prediction for concentration profiles of ethane and predicted concentration profiles of radicals H, OH, and O for strain rate a=90 s−1 at different equivalence ratios: (a) Φ=1.65; (b) Φ=1.85; (c) Φ=2.20; (d) Φ=2.65.
Grahic Jump Location
Comparison between measurement and prediction for concentration profiles of intermediate species CH4 and computed concentration profiles of radicals H, OH, and O for strain rate a=90 s−1 at different equivalence ratios: (a) Φ=1.65; (b) Φ=1.85; (c) Φ=2.20; (d) Φ=2.65.
Grahic Jump Location
Comparison between measurement and prediction for concentration profiles of intermediate species C2H4 and computed concentration profiles of radicals H, OH, and O for strain rate a=90 s−1 at different equivalence ratios: (a) Φ=1.65; (b) Φ=1.85; (c) Φ=2.20; (d) Φ=2.65.
Grahic Jump Location
(a) Schematic diagram of a two-stage flame of ethane in counterflowing streams; (b) a photograph of the flame sketched above.
Grahic Jump Location
Comparison between measurement and prediction for profiles of temperature and major species for strain rate a=90 s−1 at different equivalence ratios: (a) Φ=1.65; (b) Φ=1.85; (c) Φ=2.20; (d) Φ=2.65.

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