Results 1 to 10 of about 539 (136)
Darrieus–Landau instability and Markstein numbers of premixed flames in a Hele-Shaw cell
Proceedings of the Combustion Institute, 2019 Hydrodynamic flame instabilities are studied in a Hele-Shaw burner. By studying the development of perturbations, starting from a 2D Bunsen flame at the top of the burner, growth rates are measured for propane and methane–air mixtures, and compared to theoretical predictions.
Pedro Garcia-Ybarra +2 more
exaly +3 more sources
An Experimental and a Kinetic Modelling Study of Ethanol/Acetone/Ethyl Acetate Mixtures
Energies, 2022 With the world’s energy resources decreasing, ethanol/acetone/ethyl acetate mixed fuel has the potential as a fossil fuel alternative or oxygenated fuel additive.
Yangxun Liu +5 more
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2023 To investigate the dynamic behavior and flame acceleration of spherically expanding hydrogen flames under the low-pressure conditions, the deflagration experiments were conducted in a closed combustion chamber. The dynamic behavior of hydrogen flames was
Toshiyuki KATSUMI +4 more
doaj +1 more source
Flow field and local burning velocity affected by stretch in swirl flow of turbulent premixed flames
Journal of Thermal Science and Technology, 2022 In this study, we have investigated turbulent premixed flames affected by local stretch in a swirl flow, measured by the simultaneous OH-PLIF/SPIV system. Evaluating the transient of burning velocity and stretch rate, the flow and the flame dynamics in a
Kazuhiro YAMAMOTO +2 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
CFD Analysis of Explosions with Hydrogen-Methane-Air Mixtures in Congested Geometries
Chemical Engineering Transactions, 2022 Hydrogen is an enabler for de-carbonising the energy system in Europe by 2050. In the UK, several projects are investigating the feasibility of gradually blending hydrogen into the natural gas pipelines with the aim to reach 100% hydrogen in the gas ...
Melodía Lucas +3 more
doaj +1 more source
Laminar burning velocities and Markstein numbers of hydrocarbonair flames [PDF]
Combustion and Flame, 1993 Effects of positive flame stretch on the laminar burning velocities of hydrocarbon/air mixtures were studied experimentally using outwardly propagating spherical flames. The test conditions included propane, methane, ethane, and ethylene-air flames at various fuel-equivalence ratios and normal temperature and pressure.
Tseng, L. -K. +2 more
openaire +2 more sources
Laminar Flame Characteristics of Premixed Methanol–Water–Air Mixture
Energies, 2020 Methanol is hygroscopic in a gaseous state and is a promising alternative fuel for internal combustion engines. It is understood that adding water can improve the antiknock performance for spark ignition engines, but this will also affect the flame speed
Zhennan Zhu +5 more
doaj +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
Experimental Study on Local Flame Properties of Hydrogen Added Hydrocarbon Premixed Turbulent Flames
Journal of Thermal Science and Technology, 2009 This experimental study is performed to investigate directly the local flame properties of turbulent propagating flames at the same weak turbulence condition (u'/SL0=1.4), in order to clarify basically the influence of the addition of hydrogen to ...
Masaya NAKAHARA +2 more
doaj +1 more source