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ISSN Druckformat: 2150-3621
ISSN Online: 2150-363X
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COMPLEX CHEMISTRY SIMULATION OF FLOX®: FLAMELESS OXIDATION COMBUSTION
ABSTRAKT
The major concern of the present paper is the numerical simulation of the flow and combustion of methane in a FLOX® combustor at high-pressure operating conditions. The purpose is to investigate the ability of the FLOX® concept to be used in a (micro) gas turbine combustor. FLOX® combustion is a highly turbulent and high-velocity combustion process, which is strongly dominated by chemical nonequilibrium effects.
In a turbulent flow, the key aspects of a combustion model are twofold: (i) chemistry and (ii)
turbulence/chemistry interaction. In the FLOX® combustion, we find that both physical mechanisms are of equal importance. Throughout our simulations, we use the complex finite rate chemistry scheme GRI3.0 for methane and a simple partially stirred reactor (PaSR) model to account for the turbulence effect on the combustion. The computational results agree very well with experimental data obtained at DLR test facilities. For a pressure level of 20 bar, computational results for a burner load of 417 kW and an air-to-fuel ratio of λ = 2.16 are presented and compared to experimental data.
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Lammel Oliver, Schütz Harald, Schmitz Guido, Lückerath Rainer, Stöhr Michael, Noll Berthold, Aigner Manfred, Hase Matthias, Krebs Werner, FLOX® Combustion at High Power Density and High Flame Temperatures, Journal of Engineering for Gas Turbines and Power, 132, 12, 2010. Crossref
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Lammel Oliver, Stöhr Michael, Kutne Peter, Dem Claudiu, Meier Wolfgang, Aigner Manfred, Experimental Analysis of Confined Jet Flames by Laser Measurement Techniques, Journal of Engineering for Gas Turbines and Power, 134, 4, 2012. Crossref
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Gounder James D., Zizin Anton, Oliver Lammel, Rachner Michael, Kulkarni Sagar R., Aigner Manfred, Experimental and numerical investigation of spray characteristics in a new FLOX®based combustor for liquid fuels for Micro Gas Turbine Range Extender (MGT-REX), 52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016. Crossref
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Yin Zhiyao, Boxx Isaac, Meier Wolfgang, Influence of self-sustained jet oscillation on a confined turbulent flame near lean blow-out, Proceedings of the Combustion Institute, 36, 3, 2017. Crossref
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Severin Michael, Lammel Oliver, Ax Holger, Lückerath Rainer, Meier Wolfgang, Aigner Manfred, Heinze Johannes, High Momentum Jet Flames at Elevated Pressure: Detailed Investigation of Flame Stabilization With Simultaneous Particle Image Velocimetry and OH-LIF, Journal of Engineering for Gas Turbines and Power, 140, 4, 2018. Crossref
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Lückerath Rainer, Meier Wolfgang, Aigner Manfred, FLOX ® Combustion at High Pressure With Different Fuel Compositions, Journal of Engineering for Gas Turbines and Power, 130, 1, 2008. Crossref
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Ax Holger, Lammel Oliver, Lückerath Rainer, Severin Michael, High-Momentum Jet Flames at Elevated Pressure, C: Statistical Distribution of Thermochemical States Obtained From Laser-Raman Measurements, Journal of Engineering for Gas Turbines and Power, 142, 7, 2020. Crossref
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Petry Niklas, Schäfer Dominik, Lammel Oliver, Hampp Fabian, Quantification of coflow effects on primary atomization of pressure swirl atomizers, International Journal of Multiphase Flow, 149, 2022. Crossref