Results 11 to 20 of about 979 (264)
Pulsating regimes of flames propagation in a model with chain-branching reaction [PDF]
Компьютерные исследования и моделирование, 2009 In this paper we investigate propagation of planar combustion waves in an adiabatic model with two-step chain branching reaction mechanism. Pulsating instabilities are found to emerge for fuel Lewis number greater than one due to a Hopf bifurcation.
V. V. Gubernov +2 more
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Energy and AI, 2021 The intermittent nature of operation and unpredictable availability of renewable sources of energy (e.g., wind and solar) would require the combustors in fossil-fuel power plants, sharing the same grid, to operate with large turn-down ratios. This brings
Sudeepta Mondal +3 more
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Experimental Investigation of Flame Anchoring Behavior in a LOX/LNG Rocket Combustor
Aerospace, 2023 Hot fire tests of a multi-injector research combustor were performed with liquid-oxygen and liquefied-natural-gas (LOX/LNG) propellants at chamber pressures from 30 up to 67 bar, hence at conditions similar to an upper stage rocket engine.
Jan Martin +4 more
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Numerical Analysis of Self-Excited Combustion Instabilities in a Small MMH/NTO Liquid Rocket Engine
International Journal of Aerospace Engineering, 2020 Combustion instabilities in a small MMH/NTO liquid rocket engine used for satellite attitude and course control are numerically investigated. A three-dimensional Navier-Stokes code is developed to simulate two-phase spray combustion for cases with five ...
Jianxiu Qin, Huiqiang Zhang
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Effect of ramp-cavity on hydrogen fueled scramjet combustor
Propulsion and Power Research, 2014 Sustained combustion and optimization of combustor are the two challenges being faced by combustion scientists working in the area of supersonic combustion.
J.V.S. Moorthy +3 more
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Cycle-Resolved Computations of Stratified-Charge Turbulent Combustion in Direct Injection Engine
Journal of Thermal Science and Technology, 2013 An extremely lean burning engine has been expected to improve fuel consumption rate of engines. To achieve this, stable combustion should be realized for a wide range of operating conditions at air-fuel ratio over 40.0.
Nobuhiro SHINMURA +2 more
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3D convolutional selective autoencoder for instability detection in combustion systems
Energy and AI, 2021 While analytical solutions of critical (phase) transitions in dynamical systems are abundant for simple nonlinear systems, such analysis remains intractable for real-life dynamical systems. A key example is thermoacoustic instability in combustion, where
Tryambak Gangopadhyay +6 more
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Impact of local secondary gas addition on the dynamics of self-excited ethylene flames
International Journal of Thermofluids, 2021 Advanced combustion strategies for gas turbine applications, such as lean burn operation, have been shown to be effective in reducing NOx emissions and increasing fuel efficiency.
Taaha Hussain +2 more
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Numerical Simulations of Combustion Instabilities in a Combustor with an Augmentor-Like Geometry
Aerospace, 2019 With the goal of assessing the capability of Computational Fluid Dynamics (CFD) to simulate combustion instabilities, the present work considers a premixed, bluff-body-stabilized combustor with well-defined inlet and outlet boundary conditions.
Esteban Gonzalez-Juez
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Journal of Combustion, 2022 Lean premixed (LPM) combustion processes are of increased interest to the gas turbine industry due to their reduction in harmful emissions. These processes are susceptible to thermoacoustic instabilities, which are produced when energy added by an in ...
Cody Dowd, Joseph Meadows
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