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Experimental Study of Flame Dynamics in a Triple-Injector Swirling Nonpremixed Combustor Under Different Thermoacoustic Self-Excited Instability Modes [PDF]
SensorsCombustion instability is one of the prominent and unavoidable problems in the design of high-performance propulsion systems. This study investigates the heat release rate (HRR) responses in a triple-nozzle swirling nonpremixed combustor under various ...
Xiang Zhang, Suofang Wang, Yong Liu
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Transfer Functions of Ammonia and Partly Cracked Ammonia Swirl Flames
Energies, 2023 The replacement of hydrocarbon fuels by ammonia in industrial systems is challenging due to its low burning velocity, its narrow flammability range, and a large production of nitric oxide and nitrogen dioxide when burned close to stoichiometric ...
Nader N. Shohdy +2 more
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Fluids, 2022 Convective velocity perturbations (CVPs) are known to play an important role in the response of flames to acoustic perturbations and in thermoacoustic combustion instabilities.
Thomas Steinbacher, Wolfgang Polifke
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Aerospace, 2023 Combustion instability constitutes the primary loss source of combustion chambers, gas turbines, and aero engines, and it affects combustion performance or results in a sudden local oscillation.
Nan Meng, Feng Li
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Numerical investigation of the premixed V-flame stabilization and blowout [PDF]
مهندسی مکانیک شریف, 2021 Global warming and high fossil fuel consumption increase the application of the low-Nox burner with lean-premixed combustion. However, this type of combustion is more susceptible to thermoacoustic instabilities.
N. Nabatian
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Dynamics of stratified swirl flame near lean blow out
Propulsion and Power Research, 2021 This paper studies the flame dynamics near lean blowout (LBO) conditions in a stratified swirl burner. The novel BASIS burner is used and fueled with premixed methane/air mixture at atmospheric conditions.
Meng Han +3 more
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Ultra-Lean Gaseous Flames in Terrestrial Gravity Conditions
Fluids, 2021 Development of the combustion process in the gaseous mixtures of near-limit composition is of great interest for fundamental aspects of combustion theory and fire-safety applications.
Ivan Yakovenko +2 more
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Energies, 2021 The present paper compares the flow structure and flame dynamics during combustion of methane and syngas in a model gas-turbine swirl burner. The burner is based on a design by Turbomeca.
Vladimir Dulin +8 more
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An Experimental Investigation on Flame Pulsation for a Swirl Non-Premixed Combustion
Energies, 2018 Flame pulsation has a significant effect on combustion, and understanding its oscillatory behavior is important to the combustion community. An experiment was performed to analyze the pulsation characteristics of a swirl non-premixed flame under various ...
Zhongya Xi +4 more
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Combustion Characteristics of Premixed Hydrogen/Air in an Undulate Microchannel
Energies, 2022 This work reports a numerical investigation of microcombustion in an undulate microchannel, using premixed hydrogen and air to understand the effect of the burner design on the flame in order to obtain stability of the flame.
Pedro R. Resende +3 more
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