Results 31 to 40 of about 46,903 (297)

Flame acceleration in unconfined lean hydrogen-oxygen mixtures using a hemispherical soap bubble method

open access: yesGreen Energy and Resources
This study investigates the flame acceleration dynamics in lean hydrogen-oxygen mixtures, focusing on critical parameters such as Péclet number, Markstein number, and the acceleration exponent.
Wookyung Kim   +5 more
doaj   +1 more source

Experimental and Numerical Study of Gas Injection Effect on the Methane–Air Combustion inside a Coaxial Burner

open access: yesFluids, 2021
This paper is devoted to the analysis of the effect of gas injection on the efficiency of gaseous fuel burning. A coaxial burner with a perforated inner wall is presented in which the methane–air acceleration is observed.
Alexey Kiverin   +5 more
doaj   +1 more source

Premixed flame propagation in vertical tubes

open access: yes, 2015
Analytical treatment of premixed flame propagation in vertical tubes with smooth walls is given. Using the on-shell flame description, equations describing quasi-steady flame with a small but finite front thickness are obtained and solved numerically. It
Kazakov, Kirill A.
core   +1 more source

Numerical analysis of flow fields generated by accelerating flames [PDF]

open access: yes17th Aerospace Sciences Meeting, 1979
A numerical technique is presented for the analysis of nonsteady flowfields generated by accelerating flames in gaseous media. The problem is formulated in Eulerian coordinates and the solution is based on the extension of the floating shock-fitting technique to all the discontinuities and their interactions occurring in the flowfield.
Kurylo, J., Dwyer, H.A., Oppenheim, A.K.
openaire   +1 more source

Study on Hydrogen Combustion Flame Acceleration Mechanism and Prediction Method During Severe Accidents in Nuclear Power Plants

open access: yesEnergies
Combustion caused by hydrogen-dominated combustible gas mixtures presents critical threats to nuclear safety during severe accidents in nuclear power plants, primarily due to their propensity for flame acceleration, deflagration, and subsequent ...
Ran Liu   +5 more
doaj   +1 more source

Laser-Plasma Acceleration with FLAME and ILIL Ultraintense Lasers

open access: yesApplied Sciences, 2013
We report on the development of radiation and electron sources based on laser-plasma acceleration for biomedical and nuclear applications, using both the table top TW laser at ILIL and the 220 TW FLAME laser system at LNF.
Naveen Pathak   +12 more
doaj   +1 more source

Studies on the flame propagation characteristic and thermal hazard of the premixed N2O/fuel mixtures

open access: yesDefence Technology, 2020
An experimental study was carried out to investigate the flame propagation and thermal hazard of the premixed N2O/fuel mixtures, including NH3, C3H8 and C2H4.
Yu-yan Li   +5 more
doaj   +1 more source

Unsteady Combustion of the Heptane-in-Water Emulsion Foamed with Hydrogen–Oxygen Mixture

open access: yesApplied Sciences, 2023
This research paper numerically studies how hydrocarbon additives affect hydrogen combustion in the process of complex fuel burning on the example of the combustible foam representing the heptane-in-water emulsion foamed with a hydrogen–oxygen mixture ...
Alexey Kiverin, Ivan Yakovenko
doaj   +1 more source

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

Critical Criterion for Flame Spread Acceleration of Concave Surfaces with Different Curvatures

open access: yesFire
Concave surface is a common geometry in both industrial buildings and natural environments; the flame spread behaviors on this special surface are worth studying, while few studies have been completed yet.
Yang Zhou, Haoteng Chen, Xu Yan
doaj   +1 more source

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