Results 21 to 30 of about 946 (264)
Experiments and a correlation of turbulent burning velocities.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1985 層流燃焼速度SLは同じで,層流火炎の反応域厚さが互いに異なる混合気について乱流燃焼実験を行った.その結果,反応域厚さδは乱流燃焼速度STに大きく影響し,SLー定で同じ乱れ強さu'ではδが薄いものほどST/SLが大きいことが明らかになった.次に(ST一.SL)/u'で定義された乱れ強さの有効度は,整理に用いた本論文と他のいくつかの実験結果について,反応域厚さと乱れの平均空間尺度の比が増すにつれて減少することが示された.
KIDO, Hiroyuki +2 more
openaire +1 more source
Effect of Stretch on Local Burning Velocity of Premixed Turbulent Flames
Journal of Thermal Science and Technology, 2007 The effect of positive stretch on the local flame properties of turbulent propagating flames in the flamelet regime was investigated experimentally for methane-, hydrogen- and propane-air mixtures with lean and rich having nearly the same laminar burning
Masaya NAKAHARA +3 more
doaj +1 more source
Effects of hydrogen addition and turbulence on ignition and meso-scale flames of propane mixtures
Journal of Thermal Science and Technology, 2022 This study has investigated experimentally the effects of hydrogen addition and turbulence on the ignition and the flame-kernel development characteristics in isotropic and homogeneous turbulence for propane mixtures.
Masaya NAKAHARA +4 more
doaj +1 more source
Theoretical and Applied Mechanics Letters, 2018 : The fuel-air cloud resulting from an accidental discharge event is normally irregular in shape and varying in concentration. Performance of dispersion simulations using the computational fluid dynamics (CFD)-based tool FLACS can get an uneven and ...
Yulong Zhang +3 more
doaj +1 more source
Fluids, 2020 Three-dimensional carrier phase Direct Numerical Simulations of V-shaped n-heptane spray flames have been performed for different initially mono-sized droplet diameters to investigate the influence of mean flow velocity on the burning rate and flame ...
Gulcan Ozel Erol, Nilanjan Chakraborty
doaj +1 more source
Energies, 2023 The characterization of a specific fuel has always been an important point for developing and designing new components or systems with the maximum efficient possible. Studying the laminar burning velocity can lay a necessary prerequisite for the accurate
Roberto Franco Cisneros +1 more
doaj +1 more source
Chemical Engineering Transactions, 2014 The ISO 1 m3 dust explosion vessel was instrumented with thermocouples acting as flame detectors. These were used with methane/air gas explosions to show that the explosion flame was spherical in the constant pressure phase of the explosion and that a ...
H. Sattar +3 more
doaj +1 more source
Fluids, 2019 In this study, closure relations for total and turbulent convection fluxes of flame surface density and scalar dissipation rate were developed (i) by placing the focus of consideration on the flow velocity conditioned to the instantaneous flame within ...
Andrei N. Lipatnikov +2 more
doaj +1 more source
Development of a CFD-Suitable Deep Neural Network Model for Laminar Burning Velocity
Applied Sciences, 2022 Hydrogen is a valued resource for today’s industry. As a fuel, it produces large amounts of energy and creates water during the process, unlike most other polluting energy sources.
Andrius Ambrutis, Mantas Povilaitis
doaj +1 more source
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2008 This study is made to attempt to establish a prediction model of tubulent burning velocity for hydrogen mixtures based on the local burning velocity of turbulent flames instead of laminar burning velocity. The turbulent burning velocity characteristics of the specific mixtures having the same laminar burning velocity SL0 with different equivalence ...
NAKAHARA, Masaya, KIDO, Hiroyuki
openaire +2 more sources