To enhance gas turbine combustor performance and emissions characteristics, better design methods need to be developed. In the present investigation, an emission model that simulates a detailed chemical kinetic scheme has been developed to provide the rate of reactions of the parent fuel, an intermediate hydrocarbon compound, CO, and H2. The intermediate fuel has variable carbon and hydrogen contents depending on operating conditions, that were selected in the development effort to simulate actual operation of rich/lean, diffusion flame, and lean combustor concepts. The developed reaction rate expressions address also the limited reaction rates that may occur in the near-wall regions of the combustor due to the admittance of radial air jets and cooling air in these regions. The validation effort included the application of the developed model to a combustor simulated by a multiple-reactor arrangement. The results indicate the accurate duplication of the calculations obtained from the detailed kinetic scheme using the developed model. This illustrates the great potential of using such a unified approach to guide the design of various types of combustor to meet the more stringent approach to guide the design of various types of combustor to meet the more stringent emissions and performance requirements of next-generation gas turbine engines.

1.
Fletcher, R. S., and Heywood, J. B., 1971, “A Model for Nitric Oxide Emissions From Aircraft Gas Turbine Engines,” AIAA Paper No. 71-123.
2.
Glassman, I., 1977, Combustion, Academic Press, New York.
3.
Hammond
D. C.
, and
Mellor
A. M.
,
1973
, “
Analytical Predictions of Emission From and Within an Allison J-33 Combustor
,”
Combustion Science and Technology
, Vol.
6
, pp.
279
86
.
4.
Hautman
D. J.
,
Dryer
F. L.
,
Schug
K. P.
, and
Glassman
I.
,
1981
, “
A Multiple-Step Overall Kinetic Mechanism for the Oxidation of Hydrocarbons
,”
Combustion Science and Technology
, Vol.
25
, pp.
219
235
.
5.
Jones
W. P.
, and
Lindstedt
R. P.
,
1988
, “
Global Reaction Schemes for Hydrocarbon Combustion
,”
Combustion and Flame
, Vol.
73
, pp.
233
249
.
6.
Lefebvre
A. H.
,
1984
, “
Fuel Effects on Gas Turbine Combustion-Liner Temperature, Pattern Factor, and Pollutant Emissions
,”
AIAA Journal of Aircraft
, Vol.
21
, No.
11
, pp.
887
898
.
7.
Lefebvre
A. H.
,
1985
, “
Fuel Effects on Gas Turbine Combustion-Ignition, Stability, and Combustion Efficiency
,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER
, Vol.
107
, pp.
24
37
.
8.
Mellor, A. M., 1976, “Gas Turbine Engine Pollution,” Prog. Energy Combust. Sci., Pergamon Press, Vol. 1, pp. 111–133.
9.
Plee
S. L.
, and
Mellor
A. M.
,
1978
, “
Flame Stabilization in Simplified Prevaporizing Partially Vaporizing and Conventional Gas Turbine Combustors
,”
Journal of Energy
, Vol.
2
, No.
6
, pp.
346
353
.
10.
Plee, S. L., and Mellor, A. M., 1979, “Characteristic Time Correlation for Lean Blowoff of Bluff-Body-Stabilized Flames,” Comb. and Flame, pp. 61–80.
11.
Rizk, N. K., and Mongia, H. C., 1991, “Low NOx Rich-Lean Combustion Concept Application,” AIAA Paper No. 91-1962.
12.
Rizk
N. K.
, and
Mongia
H. C.
,
1993
a, “
Three-Dimensional Gas Turbine Combustor Emissions Modeling
,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER
, Vol.
115
, pp.
603
611
.
13.
Rizk
N. K.
, and
Mongia
H. C.
,
1993
b, “
Semianalytical Correlations for NOx, CO, and UHC Emissions
,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER
, Vol.
115
, pp.
612
619
.
14.
Rizk
N. K.
, and
Mongia
H. C.
,
1995
, “
NOx Model for Lean Combustion Concept
,”
AIAA Journal of Propulsion and Power
, Vol.
11
, No.
1
, pp.
161
169
.
15.
Westbrook
C. K.
, and
Dryer
F. L.
,
1981
, “
Simplified Reaction Mechanism for the Oxidation of Hydrocarbon Fuels in Flames
,”
Combustion Science and Technology
, Vol.
27
, pp.
31
43
.
16.
Westbrook
C. K.
, and
Pitz
W. J.
,
1984
, “
A Comprehensive Chemical Kinetic Reaction Mechanism for Oxidation and Pyrolysis of Propane and Propane
,”
Combustion Science and Technology
, Vol.
37
, pp.
117
152
.
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