Modeling study of gas-turbine combustor emission

Лебедев, А. Б.; Secundov, A. N.; Starik, A. M.; Титова, Н. С.; Schepin, A. M.

doi:10.1016/j.proci.2008.05.015

Cited by 34 publications

(24 citation statements)

References 9 publications

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“…Techniques vary widely, including large eddy simulations (LES) (e.g., Eggenspieler and Menon, 2005;Mueller and Pitsch, 2013), Reynolds averaged Navier-Stokes (RANS) (e.g., Joung and Huh, 2010;Magnussen and Hjertager, 1976), as well as stirred reactor networks (Bhargava et al, 2000;Fichet et al, 2010;Lebedev et al, 2009;Moniruzzaman and Yu, 2012;Starik et al, 2013), where the few references provided are examples. Similar models are now in standard use within industries, particularly for assistance in designing low NOx combustors.…”

Section: Introductionmentioning

confidence: 99%

Fingerprint of Hydrocarbon Emissions from Gas Turbine Exhaust at Low Power

Zeppieri¹,

Colket²

2014

Combustion Science and Technology

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Measurements in exhaust plumes from a variety of gas turbine engines indicate that many hydrocarbon emissions, including aldehydes, are linearly related. Hence, HC 1 ∼ = a HC 2 , where 'a' is constant for any two HC pairs and is independent of engine type or power condition. This study explores possible causes for this 'universal' fingerprint for hydrocarbon emissions. We apply simplified analyses to idle and part power operation at which hydrocarbon emission levels are large enough to be identified and be quantitatively determined; the emission indices are on the order of 1 gram/kilogram of fuel. We consider the relations among intermediate hydrocarbon species present in laminar flame reaction zones found in freely propagating and both premixed and non-premixed opposedjet (strained) configurations. The analysis is extended to a single stirred reactor and then to a network series of reactors. Full detailed chemical kinetics and a binary surrogate mixture for jet fuel are utilized. Finally, the results are interpreted to identify probable explanations for the linearity among hydrocarbon emissions. Specifically, we conclude that this linear scaling is due to quenching of lean, premixed mixtures.

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Section: Introductionmentioning

confidence: 99%

Fingerprint of Hydrocarbon Emissions from Gas Turbine Exhaust at Low Power

Zeppieri¹,

Colket²

2014

Combustion Science and Technology

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“…As a result of this study, researchers proved the performance characteristics of the engine [11]. In another study, researchers examined emissions variations of a gas turbine engine [12]. Lebedevet et al, modeled a gas turbine combustor on CFD and analyzed emission variations on CFD.…”

Section: Introductionmentioning

confidence: 86%

Analysis of Combustion Efficiency for Turbofan Engine Combustor Using MATLAB

Şöhret¹,

Turan²,

Karakoç³

2015

IJET

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Abstract-The thermal efficiency of an aircraft turbofan engine is related to combustion efficiency.It is net output thrust power to total input fuel energy of the combustor.However, net heat effects on thermal efficiency and net heat is related to combustion efficiency.Furthermore, specifying combustion efficiency has a key role inestimating emission indices. In this study, the combustion efficiency of a turbofan engine combustor is analyzed by MATLAB. In the program codes,the basic combustion equilibrium is analyzed for carbon, hydrogen, oxygen, nitrogen, sulfur, carbon dioxide, carbon monoxide, hydrocarbon, nitrogen oxide, nitric oxide and water.As a conclusion, researchers examinethe relationship between combustion efficiency and exhaust gas emissions.

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“…The general advantage of reactor net models developed by authors (see, for example, Lebedev et al, 2009;Zakharov et al, 2009) is that these models were built on the base of CFD calculations of temperature, gas velocity and residence time in the various zone of combustor with real geometry. Using the results of CFD calculations with quasi-global kinetic mechanism or with equilibrium chemistry, the whole volume of combustor is divided on several domains with approximately uniform mixture fraction Z (Z = 1 / (1 + S / φ), where S is the mass stoichiometric coefficient: S = 17.2 for methane/air and S = 15.5 for kerosene/air mixtures), constant temperature value and mean gas residence time in the each individual zone of combustor.…”

Section: Methodology and Kinetic Modelsmentioning

confidence: 99%

“…The reactor net model for CIAM-M combustor was developed previously in Lebedev et al (2009). The schematic of this model is shown in Figure 2.…”

Section: Predictions Of Reactor Net Model For Diffusion Combustormentioning

confidence: 99%

“…Some modelling studies considered the combustor as a single perfectly stirred reactor (PSR) with fixed residence time and integral value of fuel/air equivalence ratio (Savel'ev et al, 1999;Starik et al, 2002). In recent years, the multi-reactor (reactor net) models, which treat the temperature, residence time and fuel/air composition in the reactors on the basis of 3D CFD calculations (Fichet et al, 2010;Frassoldati et al, 2009;Lebedev et al, 2009;Zakharov et al, 2009), were built. These models take into account the real temperature and mixture composition fields inside the combustor and predict the emissions of NO x , CO and C n H m with rather high accuracy.…”

Section: Introductionmentioning

confidence: 99%

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Application of reactor net models for the simulation of gas-turbine combustor emissions

Starik

Kozlov

Лебедев

et al. 2014

IJSA

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The work deals with the evaluation of applicability of reactor net models and different reaction mechanisms for the predictions of emission characteristics of aero-engine combustors operating both in diffusion and in homogeneous burning modes. It is shown that the accuracy of the calculations of emission indices for NO x , CO and unburned hydrocarbons (UHC) is dependent strongly on the applied reaction mechanisms. The computations exhibited that for the combustor operating in a diffusion mode the use of methane as a fuel, instead of kerosene, leads to decreasing NO x (by 35%) emission index, as well as to decreasing the CO and UHC emissions, while for the combustor with homogeneous combustion of fuel-lean mixture the use of methane as a fuel results in an increase of EINO x value (by a factor of 1.4) compared with kerosene-fuelled combustor.Reference to this paper should be made as follows: Starik, A.M., Kozlov, V.E., Lebedev, A.B. and Titova, N.S. (2014) 'Application of reactor net models for the simulation of gas-turbine combustor emissions', Int.

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Modeling study of gas-turbine combustor emission

Cited by 34 publications

References 9 publications

Fingerprint of Hydrocarbon Emissions from Gas Turbine Exhaust at Low Power

Fingerprint of Hydrocarbon Emissions from Gas Turbine Exhaust at Low Power

Analysis of Combustion Efficiency for Turbofan Engine Combustor Using MATLAB

Application of reactor net models for the simulation of gas-turbine combustor emissions

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