Results 41 to 50 of about 760,958 (323)

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

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

Detonation initiation in a channel via facing injection of flame jets

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Detonation transition was experimentally investigated using flame jetting through the orifice of a small sub-chamber, which was equipped on the side wall near the closed end of the main channel (square inner closs section, 50 mm on a side) filled with a ...
Shinichi MAEDA   +3 more
doaj   +1 more source

Premixed Propane–Air Flame Propagation in a Narrow Channel with Obstacles

open access: yesEnergies, 2023
Flame interaction with obstacles can affect significantly its behavior due to flame front wrinkling, changes in the flame front surface area, and momentum and heat losses.
Sergey Yakush   +2 more
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

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +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

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Mechanism of Spontaneous Acceleration of Slow Flame in Channel

open access: yesFire
This paper is devoted to the numerical analysis of the spontaneous acceleration of a slow flame in a semi-closed channel. In particular, the flow development in the channel ahead of the propagating flame is analyzed.
Andrey Yarkov   +2 more
doaj   +1 more source

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