Results 21 to 30 of about 2,511 (241)
Buoyant Unstable Behavior of Initially Spherical Lean Hydrogen-Air Premixed Flames
Energies, 2014 Buoyant unstable behavior in initially spherical lean hydrogen-air premixed flames within a center-ignited combustion vessel have been studied experimentally under a wide range of pressures (including reduced, normal, and elevated pressures).
Zuo-Yu Sun +4 more
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Energies, 2022 The use of lifted flames presents some very promising advantages in terms of pollutant emissions and flame stability. The focus here is on a specific low-swirl injection system operated with methane and derived from an air-blast atomizer for aero-engine ...
Leonardo Langone +2 more
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Effects of Electric Fields on the Combustion Characteristics of Lean Burn Methane-Air Mixtures
Energies, 2015 In this work, the effects of the electric fields on the flame propagation and combustion characteristics of lean premixed methane–air mixtures were experimentally investigated in a constant volume chamber.
Jianfeng Fang +4 more
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Stretch Rate and Displacement Speed Correlations for Increasingly-Turbulent Premixed Flames [PDF]
Flow, Turbulence and Combustion, 2018 Probability density functions of the components of stretch rate are investigated using a previously-published Direct Numerical Simulation dataset spanning a range of turbulence intensities in the Thin Reaction Zones (TRZ) regime. The dataset was generated by varying the turbulence intensity across five different simulations while maintaining fixed the ...
Nivarti, GV, Cant, RS
openaire +4 more sources
Influence of Variable Blocking Ratio on DDT Process
Energies, 2022 The influence of a variable blocking ratio on the DDT process is investigated through numerical simulation and experiment. Two dimensionless parameters, the average blocking ratio (BR¯) and the blocking ratio change rate (α), are specified to ...
Xiangzhou Feng, Xiqiao Huang
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Simultaneous measurements of flame geometry and flow field by OH-PLIF/Stereo PIV
Nihon Kikai Gakkai ronbunshu, 2016 It is difficult to understand turbulent combustion, because the combustion process is very complex and unsteady. One of the useful parameters for discussion of the unsteady flame behaviors is the flame stretch rate, which is evaluated by local flame ...
Kazuhiro YAMAMOTO +2 more
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Validation of a new level set approach in the counter flow premixed flame
Journal of Thermal Science and Technology, 2014 The flamelet model based on the concept of local flame speed S*is newly developed to describe a premixed flame with a finite thickness when defining G as the non-dimensional temperature.
Yingjie LIU, Nobuyuki OSHIMA
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AIP Advances, 2022 The combined effects of radiative heat loss, curvature, and preferential diffusion on laminar non-premixed flames (or flamelets) are investigated in this work by using asymptotic analysis.
Yushan Gao +4 more
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A review of laminar flame speeds of hydrogen and syngas measured from propagating spherical flames
Applications in Energy and Combustion Science, 2020 As promising alternatives to fossil fuels, hydrogen (H2) and syngas are playing important roles in the development and control of high-efficiency, low-emission engines.
Wang Han +3 more
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Journal of Thermal Science and Technology, 2010 Experimental study was made to investigate the propagation and extinction characteristics of a stretched cylindrical flame undergoing periodic fluctuation of equivalence ratio near the lean limit.
Yosuke SUENAGA +2 more
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