Fuel Effects on Operability of Aircraft Gas Turbine Combustors

2021 ◽  
Keyword(s):  
Gas Turbine ◽  
Gas Turbine Combustors ◽  
Fuel Effects

Preliminary Correlation of Fuel Effects on Ignitability for Gas Turbine Engines

1983 ◽  
Author(s):  
D. W. Naegeli ◽  
C. A. Moses ◽  
A. M. Mellor
Keyword(s):  
Gas Turbine ◽  
Loss Rate ◽  
Eddy Diffusion ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Relative Importance ◽  
Time Model ◽  
Gas Turbine Combustors ◽  
Fuel Effects ◽  
Spark Energy

The characteristic time model for ignition is used to correlate the spark ignition limits of fuel sprays in gas turbine combustors. The correlations are based on ignition data from several fuels in the JP-4 to JP-8 specification range and six gas turbine combustors. In the model, the criterion for ignition is that the spark energy must heat up an initial volume such that the heat release rate within that volume is greater than the loss rate. Heat generation is limited first by droplet evaporation and then the rate of hydrocarbon oxidation; heat loss is controlled by the rate of mixing (eddy diffusion). Conceptually, the rates are expressed as characteristic times in order to illustrate the relative importance of each process in the ignition event. Ignition limit correlations are given for each combustor as well as a single correlation of 322 data for four engines combined.

scholarly journals Entropy and Vorticity Wave Generation in Realistic Gas Turbine Combustors

2019 ◽  
Vol 35 (4) ◽  
pp. 839-849 ◽  
Author(s):  
Bernhard Semlitsch ◽  
Tom Hynes ◽  
Ivan Langella ◽  
Nedunchezhian Swaminathan ◽  
Ann P. Dowling
Keyword(s):  
Gas Turbine ◽  
Wave Generation ◽  
Gas Turbine Combustors

Study on the Use of HiCOP Fuel for Gas Turbine Combustors

2017 ◽  
Author(s):  
Hitoshi Fujiwara ◽  
Keiichi Okai ◽  
Mitsumasa Makida ◽  
Kazuo Shimodaira ◽  
Takuya Mizuno ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Gas Turbine Combustors

A Critical Review of NOx Correlations for Gas Turbine Combustors

1975 ◽  
Author(s):  
D. A. Sullivan ◽  
P. A. Mas
Keyword(s):  
Experimental Data ◽  
Data Base ◽  
Gas Turbine ◽  
Critical Review ◽  
Inlet Temperature ◽  
Nox Emissions ◽  
Empirical Correlations ◽  
Gas Turbine Combustors ◽  
Semi Empirical ◽  
Adequate Data

The effect of inlet temperature, pressure, air flowrate and fuel-to-air ratio on NOx emissions from gas turbine combustors has received considerable attention in recent years. A number of semi-empirical and empirical correlations relating these variables to NOx emissions have appeared in the literature. They differ both in fundamental assumptions and in their predictions. In the present work, these simple NOx correlations are compared to each other and to experimental data. A review of existing experimental data shows that an adequate data base does not exist to evaluate properly the various NOx correlations. Recommendations are proposed to resolve this problem in the future.

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