Results 11 to 20 of about 2,639 (256)
Influences of stretch and curvature on the temperature of stretched cylindrical diffusion flames
Journal of Thermal Science and Technology, 2016 The structure of a counterflow-type cylindrical diffusion flame was studied experimentally to determine the effect of stretch and curvature. The cylindrical flame used in this study had a concave curvature with respect to the fuel stream.
Yosuke SUENAGA +2 more
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Cellular structures of laminar lean premixed H2/CH4/air polyhedral flames
Applications in Energy and Combustion Science, 2023 Fundamental studies on the effects of differential diffusion of hydrogen (H2) on flame structure are motivated as the high diffusivity of H2 presents challenges for the modeling and optimization of combustion systems.
Shuguo Shi +6 more
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Effects of the Flame Curvature on the Burning Velocity of Triple Flame
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2004 The upstream velocity and concentration fields of Triple Flame formed in a concentration gradient of a methane-air mixture have been measured on various flame curvatures in order to investigate the relation between the flame curvature and the burning velocity of Triple Flame. The flame curvatures are measured from the visible flame images. The unburned
NAGAI, Yoshitaka +2 more
openaire +2 more sources
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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Extinction of Cylindrical Diffusion Flame
Journal of Thermal Science and Technology, 2011 An experimental study was performed on the behavior and extinction characteristics of the cylindrical diffusion flame affected by both factors of stretch and curvature.
Yosuke SUENAGA +2 more
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Energies, 2022 In this study, 3D premixed turbulent ammonia-hydrogen flames in air were studied using DNS. Mixtures with 75%, 50% and 25% ammonia (by mole fraction in the fuel mixture) and equivalence ratios of 0.8, 1.0 and 1.2 were studied.
Nithin Mukundakumar, Rob Bastiaans
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AIP Advances, 2021 The flame dynamics of steady propagation of a premixed flame in semi-closed channels is investigated. The hydrodynamic model takes into account impacts of channel width, thermal expansion, straining effect, and downward gravity force on the flame front ...
Yifan Han, Luhao Liu
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Energies, 2021 Moderate or intense low-oxygen dilution (MILD) combustion is a novel combustion technique that can simultaneously improve thermal efficiency and reduce emissions.
Hazem S.A.M. Awad +3 more
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Eurasian Chemico-Technological Journal, 2014 The present work aims at the detailed understanding of the local processes in premixed combustion of hydrogen, methane and propane flames at unsteady conditions.
J. A. Denev, I. Naydenova, H. Bockhorn
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Equivolumetric Evolution of Planar Curves
Abstract and Applied Analysis, 2014 We present the equivolumetric evolution of planar curves, which is a new type of curvature dependent evolution for a flame propagation model. This evolution reflects the nonlinear contribution of the curvature of the front to the flame propagation speed.
Hwan Pyo Moon
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