Journal ArticleDOI
Investigation of Liquid Fueled Turbulent Diffusion Flames
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In this article, the basic flame structure was found to consist of a hollow reaction region (shear layer) along the boundary between the recirculation zone and the free stream.Abstract:
—Pollutant emissions data gathered from within a simulated gas turbine combustor primary zone (flame stabilized in the wake of a disc with liquid fuel injected into the wake region from the center of the disc) for three widely varied operating conditions are reported and discussed. The basic flame structure was found to consist of a hollow reaction region (shear layer) along the boundary between the recirculation zone and the free stream. As the heterogeneous properties of the combustion process increased in importance, a free stream flame zone following the fuel spray was also detectable. In addition, CO and NOx emissions were found to originate in separate regions of the flame structure.read more
Citations
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Journal ArticleDOI
Fuel droplet vaporization and spray combustion theory
TL;DR: A critical review of modern theoretical developments on problems of droplet vaporization in a high-temperature environment and of spray combustion is presented in this paper, with some mention of empirical evidence.
Journal ArticleDOI
Semi-empirical correlations for gas turbine emissions, ignition, and flame stabilization
TL;DR: In this paper, a characteristic time model has been formulated to predict gaseous emissions and efficiency in terms of combustor inlet conditions and geometry for operating conditions where the fuel evaporation rate is fast compared to the fuel vapor/air mixing rate.
Journal ArticleDOI
Calculation of the Flow Properties of a Confined Kerosene-Spray Flame
Y. El Banhawy,J. H. Whitelaw +1 more
TL;DR: In this article, a method for the prediction of local properties of spray flames is described and evaluated by comparison with experimental data, which is coupled with a droplet tracking technique which allows the determination of the droplet location and properties within the flowfield.
Journal ArticleDOI
Modelling and measurements in turbulent combustion
W.P. Jones,J.H. Whitelaw +1 more
TL;DR: In this article, the authors considered available models and measurements for turbulent combusting flows and made an assessment of the extent to which they will allow the a priori calculation of practical combusting flow.
Journal ArticleDOI
Characteristic times for combustion and pollutant formation in spray combustion
TL;DR: In this paper, the dominant physical processes in a liquid spray fueled burner (fuel evaporation, turbulent mixing, and chemical reaction) are characterized by time scales which typify the importance of each process.
References
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Journal ArticleDOI
Liquid-spray burning in the wake of a stabilizer disc
C.G. McCreath,N.A. Chigier +1 more
TL;DR: In this article, the authors measured droplet characteristics within a highly luminous, hollow-cone pressure-jet flame, stabilized by a disc, using a twin-spark high-speed photographic technique.
Journal ArticleDOI
Emissions from and within an Allison J-33 Combustor
TL;DR: In this article, gas temperature, carbon monoxide, and nitric oxide concentration profiles measured as a function of axial and radial position inside an Allison J-33 combustor with unheated inlet air are reported.
Journal ArticleDOI
Nitrogen dioxide formation in gas turbine engines: measurements and measurement methods
TL;DR: The possibility of significant nitrogen dioxide (NO2 ) formation within a gas turbine engine is a topic of much current discussion as discussed by the authors, and evidence in the literature supporting both points of view is reviewed and discussed.
Journal ArticleDOI
Simplified Physical Model of Spray Combustion in a Gas Turbine Engine
TL;DR: In this paper, a simplified physical model of the spray combustion process in a turbine combustor has been developed, which not only is consistent with previous experimental data obtained in this laboratory, but also assists in understanding the successes and failures of analytical combustor models available in the open literature.
Journal ArticleDOI
Emissions from and within an Allison J-33 Combustor II:The Effect of Inlet Air Temperature
TL;DR: In this article, a model of the flow pattern within an Allison J-33 combustor using unheated inlet air was previously postulated (Mellor et al. 1972b), based on internal measurements.
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