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Numerical Study of Turbulent Jet Ignition in a Lean Premixed Configuration
Flow, Turbulence and Combustion, 2017Direct numerical simulations (DNS) of a hot combustion product jet interacting with a lean premixed hydrogen-air coflow are conducted to fundamentally investigate turbulent jet ignition (TJI) in a three-dimensional configuration. TJI is an efficient method for initiating and controlling combustion in ultra-lean combustion systems.
AbdoulAhad Validi, Farhad Jaberi
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Large eddy simulation of a homogeneously charged turbulent jet ignition system
International Journal of Engine Research, 2017Transient jet ignition of a homogeneous methane air mixture in a turbulent jet ignition system is studied computationally using a large eddy simulation turbulence model. The jet discharges from a prechamber into a main combustion chamber via one or more orifice(s) and provides a distributed ignition source in turbulent jet ignition.
Masumeh Gholamisheeri +2 more
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Experiments and modeling of a dual-mode, turbulent jet ignition engine
International Journal of Engine Research, 2019The dual-mode, turbulent jet ignition system is a promising combustion technology to achieve high diesel-like thermal efficiency at medium to high loads and potentially exceed diesel efficiency at low-load operating conditions. The dual-mode, turbulent jet ignition systems to date proved a high level of improvement in thermal efficiency compared to ...
Sedigheh Tolou, Harold Schock
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Spark Ignition of Turbulent Premixed and Non-premixed Opposed Jet Flames
42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2006The probabilistic nature of ignition of premixed and non-premixecl turbulent opposed-jet flames has been examined and the flame structures following ignition have been visualized directly and with OH-PLIF. It has been found that high bulk velocities decrease the ignition probability in all locations and for all flames.
Samer Ahmed +3 more
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Ignition in a transient turbulent jet of hot inert gas
Combustion and Flame, 1972The ignition mechanism described by Phillipsis applied to the ignition of a flammable fuel/air mixture by a transient jet of hot inert gas. Calculated minimum jet sizes for ignition for a number of fuels were compared with the maximum experlmental safe gap for a flameproof enclosure.
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ASME 2016 Internal Combustion Engine Division Fall Technical Conference, 2016
Pressure-based ignition delay times of turbulent spray combustion of n-dodecane fuel were studied using two turbulence models: Large Eddy Simulations (LES) of turbulence and Reynolds Averaged Navier Stokes (RANS). Standard RNG k-ε and Dynamic Structure models were utilized for RANS and LES turbulence modeling respectively.
O. Samimi Abianeh, M. Levins, C. P. Chen
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Pressure-based ignition delay times of turbulent spray combustion of n-dodecane fuel were studied using two turbulence models: Large Eddy Simulations (LES) of turbulence and Reynolds Averaged Navier Stokes (RANS). Standard RNG k-ε and Dynamic Structure models were utilized for RANS and LES turbulence modeling respectively.
O. Samimi Abianeh, M. Levins, C. P. Chen
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Reactivity controlled turbulent jet ignition (RCTJI) for ammonia engine
International Journal of Hydrogen Energy, 2023Zongkuan Liu +3 more
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Optimal Combustion Phasing Modeling and Control of a Turbulent Jet Ignition Engine
IEEE/ASME Transactions on Mechatronics, 2018Combustion phasing control is very important for internal combustion engines to achieve a high thermal efficiency with low engine-out emissions. Traditional open-loop map-based control becomes less favorable in terms of calibration effort, robustness to engine aging, and especially control accuracy for turbulent jet ignition (TJI) engines due to the ...
Ruitao Song +3 more
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Ignition in 40 kW co-axial turbulent diffusion oxy-coal jet flames
Proceedings of the Combustion Institute, 2011This paper is directed towards understanding how composition of the coal transport medium (primary CO2 and O2) affects the observed ignition stand-off distance in 40 kW co-axial turbulent diffusion, oxy-coal flames, supported in a specially designed combustion test rig, rated at 100 kW.
Jingwei Zhang +3 more
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