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2.844  Articles
1 of 285 pages  |  10  records  |  more records»
Various analytical models have been developed to describe velocity profile for flame acceleration (FA) and deflagration-to-detonation transition (DDT), but none accounts for observed acceleration to constant velocity seen in case of micro gaps (in which t... see more

While a premixed flame front would consume an unburnt matter with a constant speed SL, such a flame occurs extremely seldom in the reality, where flames are curved and characterized by another velocity, Sw, and it is oftentimes conventionally assumed that... see more

The mechanism of ultrafast acceleration of a premixed flamefront propagating in a channel equipped with a “tooth-brush”-shaped array of tightly-packed obstacles has been revealed and quantified, analytically, and validated by means of the computational si... see more

Due to a flame-generated jet-flow along a centreline, premixed flames accelerate extremely fast and may even trigger a detonation when propagating in a semi-open obstructed channel (one end of the channel is closed; a flame is ignited at this end, and it ... see more

MOHAMMED ALKHABBAZ and V’YACHESLAV AKKERMAN, Dept. of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV, 26505. Influence of Fuel Nonequidiffusivity and Wall Boundary Conditions on Finger Flame Acceleration in Pipes  Amon... see more

Equidiffusive combustion is a model, which is widely employed in analytical and computational studies, including those on premixed flame acceleration. However, realistic combustible mixtures are oftentimes far from the stoichiometry, being thereby strongl... see more

Abstract: The Bychkov model of extremely fast flame acceleration in obstructed cylindrical pipes [Combust. Flame 157 (2010) 2012] employs a number of simplifying assumptions, including those of slip and adiabatic surfaces of the obstacles and the pipe wal... see more

Among various existing analytical models proposed to describe flame acceleration (FA) and deflagration-to-detonation transition (DDT), none accounts for all distinctive stages of the FA and DDT processes. To overcome such a gap, here we propose an alterna... see more

While the phenomenon of finger flame acceleration (FFA) has been investigated extensively, the previous analytical and computational studies employed numerous simplifying assumptions such as free-slip, adiabatic walls of a pipe and equidiffusive burning, ... see more

1 of 285 pages  |  10  records  |  more records»