A Computational Fluid Dynamic Investigation of Inhomogeneous Hydrogen Flame Acceleration and Transition to Detonation
Sign Up to like & getrecommendations! Published in 2018 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-018-9977-4
Abstract: Gas explosions in homogeneous reactive mixtures have been widely studied both experimentally and numerically. However, in practice and industrial applications, combustible mixtures are usually inhomogeneous and subject to vertical concentration gradients. Limited studies have been… read more here.
Keywords: flame; transition; investigation; inhomogeneous hydrogen ... See more keywords
Effect of fill flow rate on flame acceleration in a detonation channel
Sign Up to like & getrecommendations! Published in 2021 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2021.106936
Abstract: Abstract In a pulse detonation engine, filling fresh reactive mixtures into the detonation chamber is an indispensable process. The fill flow rate would significantly influence the subsequent flame acceleration and detonation initiation processes. Nevertheless, the… read more here.
Keywords: flame; flow rate; flame acceleration; fill flow ... See more keywords
Experimental investigation of spherical-flame acceleration in lean hydrogen-air mixtures
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2016.05.028
Abstract: Abstract Large-scale experiments examining spherical-flame acceleration in lean hydrogen-air mixtures were performed in a 64 m 3 constant-pressure enclosure. Equivalence ratios ranging from 0.33 to 0.57 were examined using detailed front tracking for flame diameters up… read more here.
Keywords: flame; hydrogen; spherical flame; acceleration lean ... See more keywords
Effect of surface friction on ultrafast flame acceleration in obstructed cylindrical pipes
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DOI: 10.1063/1.5087139
Abstract: The Bychkov model of ultrafast flame acceleration in obstructed tubes [Valiev et al., “Flame Acceleration in Channels with Obstacles in the Deflagration-to-Detonation Transition,” Combust. Flame 15 ... read more here.
Keywords: ultrafast flame; flame; acceleration obstructed; effect surface ... See more keywords
Effect of Heat-Loss Boundary on Flame Acceleration and Deflagration-to-Detonation Transition in Narrow Channels
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DOI: 10.1080/00102202.2017.1318855
Abstract: ABSTRACT The entire process of deflagration-to-detonation transition (DDT) is studied through direct numerical simulations in narrow channels. Calculations with adiabatic and heat-loss boundaries are conducted to investigate the effect of heat loss to walls on… read more here.
Keywords: heat loss; flame acceleration; loss;
On the Critical Condition for Flame Acceleration in Hydrogen-Based Mixtures
Sign Up to like & getrecommendations! Published in 2023 at "Materials"
DOI: 10.3390/ma16072813
Abstract: The paper presents a novel numerical approach to the quantitative estimation of the concentration limits for flame acceleration in hydrogen-based mixtures. A series of calculations are carried out for hydrogen–air and hydrogen–oxygen flames in channels.… read more here.
Keywords: acceleration; hydrogen based; flame acceleration; acceleration hydrogen ... See more keywords