Results 31 to 40 of about 44,661 (206)

Propagation of the First Flames in Type Ia Supernovae [PDF]

open access: yes, 2006
We consider the competition of the different physical processes that can affect the evolution of a flame bubble in a Type Ia supernovae -- burning, turbulence and buoyancy.
Bychkov V. V.   +4 more
core   +4 more sources

Self-Turbulent Flame Speeds [PDF]

open access: yes, 2011
International audienceThis paper reports an experimental investigation of premixed propane andmethane-air flames propagating freely in tubes 1.5 m long and with diameters rangingfrom 26 to 141 mm.
Denet, Bruno   +3 more
core   +2 more sources

Laminar flame speed, Markstein length, and cellular instability for spherically propagating methane/ethylene–air premixed flames [PDF]

open access: yesCombustion and Flame, 2020
Abstract An experimental study on laminar flame speed, Markstein length, and the onset of cellular instability was conducted by varying the equivalence ratio and ethylene/methane mixing ratio in spherically propagating premixed flames at ambient temperature and elevated pressures up to 0.8 MPa.
Kim, Hee J.   +5 more
openaire   +2 more sources

Triple flames in mixing layers with nonunity Lewis numbers [PDF]

open access: yes, 1998
The present paper is devoted to the study of the effects of nonunity Lewis numbers on triple-flame propagation in nonuniform mixtures. For definiteness, the case of a strained reactive mixing layer is considered. The fuel and oxidizer that are fed to the
Daou, J., Liñán Martínez, Amable
core   +1 more source

Experimental investigation on spark ignition of annular premixed combustors [PDF]

open access: yes, 2017
The ignition behaviour of a multiple-burner annular combustion chamber consisting of 12 or 18 bluff-body premixed methane-air swirl burners was investigated experimentally.
Machover, E, Mastorakos, E
core   +2 more sources

A review of laminar flame speeds of hydrogen and syngas measured from propagating spherical flames

open access: yesApplications 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. Achieving accurate prediction of H2-fueled combustion requires a reliable chemical mechanism which, however, still exists considerable uncertainty.
Wang Han   +3 more
openaire   +2 more sources

Numerical Study on Coupled Combustion of PMMA Counter-Directional Flame Spread at Variable Slope

open access: yesFire
This paper investigates the dual effects of slope variation and flame interaction on counter-directional flame propagation through numerical simulations of polymethylmethacrylate (PMMA) plates.
Qiong Liu   +6 more
doaj   +1 more source

Dynamic behavior and flame acceleration of outwardly expanding flame in hydrogen-air mixture

open access: yesNihon Kikai Gakkai ronbunshu, 2016
From the perspective of safety, it is necessary to assess the risk of hydrogen-air deflagration accurately. Especially, flame propagation velocity is one of the most important factors.
Toshiyuki KATSUMI   +3 more
doaj   +1 more source

Numerical Simulation of Interaction between Large-Scale Congestion and Vent during the Natural Gas Explosion in a Kitchen

open access: yesAdvances in Civil Engineering, 2021
The influence of large-scale congestion on a confined natural gas explosion in a typical Chinese kitchen was studied using the computational fluid dynamics technology.
Lei Pang   +3 more
doaj   +1 more source

Experimental study on gas and coal dust explosive overpressure and flame dynamic characteristics in an engineering-level test roadway

open access: yesFrontiers in Earth Science, 2023
The continuous development of coal science and technology has made gas and coal dust explosion disasters an important factor that restricts efficient and intelligent coal mining, which seriously threatens the safe production process of coal mines.
Yihui Niu   +6 more
doaj   +1 more source

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