Results 231 to 240 of about 5,196 (262)

Flame acceleration due to flame-induced instabilities in large-scale explosions

Combustion and Flame, 2001
Large-scale explosions of initially quiescent methane-air and propane-air mixtures at atmospheric pressure are reported, in which the flame speed of a hemispherical flame is measured up to radii just beyond 3 m. A cellular flame is developed fairly soon and thereafter the flame speed increases continually with the square root of the time.
D. Bradley, T.M. Cresswell, J.S. Puttock
openaire   +1 more source

Ignition and Flame Studies for an Accelerating Transonic Mixing Layer

Journal of Propulsion and Power, 2000
Numerical solutions have been obtained for a diffusion e ame in the two-dimensional, laminar, steady, viscous, multicomponent, compressible mixing layer in the presence of a pressure gradient by using the boundary-layer approximationsand solvingthe x-momentum,energy,and speciesconservation equations.
X. Fang, F. Liu, W. Sirignano
openaire   +1 more source

Flame acceleration and DDT in gas explosions

Journal de Physique IV (Proceedings), 2002
A qualitative description of flame acceleration (FA) process is presented, which shows a complexity of the processes that can follow a weak ignition in a combustible mixture. Considering the exclusive role of the confinement and obstructions, the main focus is made on the processes of FA and DDT typical for areas with strong confinement and heavy ...
openaire   +1 more source

Flame acceleration and explosion safety applications

Proceedings of the Combustion Institute, 2011
Abstract Accidental explosions of flammable gases and reactive gas mixtures remain a significant concern in process industries. The present paper reviews the basic mechanism of Flame Acceleration (FA), the results of recent studies on FA, and their application to explosion safety.
openaire   +1 more source

Flame Acceleration and DDT in a Torus Geometry

2017
A series of combustion experiments in an optically transparent annular channel were carried out with hydrogenoxygen mixtures from 15 to 85 vol.% H2. The complex formed by an oblique shock wave and a subsonic deflagration, only recently observed by the authors in an annular channel is investigated.
Kuznetsov, M., Lelyakin, A., Grune, J.
openaire   +1 more source

Investigation of Hydrocarbon Fast-Flame Regimes for Flame Acceleration to Detonation

AIAA Propulsion and Energy 2020 Forum, 2020
Hardeo M. Chin, Rachel Hytovick, Kareem A. Ahmed, Alexei Poludnenko   +3 more
openaire   +1 more source

Flame Acceleration in Reactive Gas Flows

2016
The experimental conditions considered when the certain estimations of the character of the flow in the installation must be performed to exclude the factors, which should hinder obtaining the results required. The evidence are obtained for the occurrence of the ignition of diluted stoichiometric methane-oxygen mix (total pressure up to 200 Torr ...
openaire   +1 more source

Analysis and Simulation of Accelerating Flames

41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2005
C. Regis Bauwens, Luc Bauwens, Ida Wierzba   +2 more
openaire   +1 more source

Flame acceleration and blast wave of H2–O2–N2–Ar mixtures in unconfined areas

International Journal of Hydrogen Energy, 2021
Wookyung Kim, Toshio Mogi, Ritsu Dobashi   +2 more
exaly  

Effects of obstacle position and hydrogen volume fraction on premixed syngas-air flame acceleration

International Journal of Hydrogen Energy, 2020
Shixin Han, Minggao Yu
exaly