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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Study on flame fractal characteristics of coal dust explosion at the decompression position of Hartmann tube [PDF]
Scientific ReportsThe explosion of coal dust is powerful and has a wide range of spread, which can easily cause mass death and injury. In this paper, the flame microstructure and propagation characteristics of coal dust explosion are recorded by high-speed photography ...
Zemiao Yang, Ke Gao, Yinhui Wang
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Experimental Studies on Suppression of Combustion Instability with the Addition of Helium [PDF]
Journal of Applied Fluid Mechanics, 2022 When combustion instability occurs, fluctuation in the release of heat couples with oscillating pressure, while the sensitivity of flame to acoustic disturbance restricts the oscillation intensity.
Y. Liu, J. Li, Z. Tian, T. Zhang, Y. Yan
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Energies, 2023 This study systematically investigates the formation of NOx in the thermal decomposition of N2O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments.
Juwon Park +6 more
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Numerical investigation of low-velocity filtration combustion instability based on the initial preheating non-uniformity [PDF]
E3S Web of Conferences, 2019 The effects of the initial preheating perturbation on the dynamical behaviors of FGC wave propagation instability for low-velocity FGC in packed bed are studied numerically. The behaviors of the flame front inclination, break, and shrinking instabilities
Xia Yongfang +4 more
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One-dimensional flame instability and control of burning in fire-chamber
Trudy Odesskogo Politehničeskogo Universiteta, 2015 The flame stability with regard to one-dimensional exponential perturbations both for the combustion in the fire-chamber and the flame propagating in closed tubes or chambers is investigated. It is proved that both stability and instability are possible
Віктор Едуардович Волков
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Journal of Thermal Science and Technology, 2023 To investigate the effects of inert-gas addition on the dynamic behavior and propagation characteristics of spherically expanding hydrogen-air flames, the experiments of premixed combustion were performed in a closed chamber.
Toshiyuki KATSUMI +6 more
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Acoustic Triggering of Combustion Instability in a Swirling Flame: An Experimental Study
Energies, 2023 Combustion instability is a common thermoacoustic coupling problem in combustion systems, and the pressure oscillations generated inevitably damage the combustion system. Studying the mechanism of combustion instability, especially the triggering problem
Yunpeng Liu +3 more
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Laminar Flame Characteristics of Premixed Methanol–Water–Air Mixture
Energies, 2020 Methanol is hygroscopic in a gaseous state and is a promising alternative fuel for internal combustion engines. It is understood that adding water can improve the antiknock performance for spark ignition engines, but this will also affect the flame speed
Zhennan Zhu +5 more
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Numerical Simulation Study on the Dynamics of Bluff-Body Flames under Oxygen-Lean Conditions
Energies, 2023 As modern aeroengine combustors advance towards high temperatures, afterburners are inevitably affected by diminished oxygen content in incoming flows, thus affecting combustion efficiency, instability, and flammability limits. In this study, the dynamic
Fuquan Deng +7 more
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