Limits of shock wave ignition of hydrogen–oxygen mixture in the presence of particles

Influence of Particle on Gas Detonation by Shock

“…Earlier in Ref. [14], a similar study was performed concerning to a stoichiometric hydrogen-oxygen mixture. It should be noted here that the stoichiometric mixture of hydrogen with oxygen is the most chemically active gaseous mixture, which under conditions typical for the compression ratios considered in shock [14] ensures detonation even when very small spatial scales of local heating regions (ignition foci) are formed).…”

“…The consideration of gas heating in the vicinity of the particle was supplemented in Ref. [14] by modeling chemical reactions in flow to reveal the effect of particles on the initiation of gas detonation. It is numerically confirmed that particles play the role of detonation promoters, and it is shown how ignition occurs near a particle.…”

“…This work is a development of the approaches proposed in Ref. [13,14]. Here, the phenomenon of acceleration of ignition in the presence of a particle in mixtures of various mixture compositions is investigated.…”

“…[14], a similar study was performed concerning to a stoichiometric hydrogen-oxygen mixture. It should be noted here that the stoichiometric mixture of hydrogen with oxygen is the most chemically active gaseous mixture, which under conditions typical for the compression ratios considered in shock [14] ensures detonation even when very small spatial scales of local heating regions (ignition foci) are formed). In addition to detonation itself, a certain danger in the development of an emergency scenario with the release and subsequent ignition of a gaseous mixture is also represented by waves of deflagration combustion, which are formed when the ignition focus is not large enough.…”