2018
DOI: 10.1016/j.combustflame.2018.08.023
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Effects of jet in crossflow on flame acceleration and deflagration to detonation transition in methane–oxygen mixture

Abstract: The fluidal jet turbulator has been a novel perturbation generator in the pulse-detonation engines research field for the past few years. In this paper, an experiment is performed to study the deflagration to detonation transition (DDT) process in a detonation chamber with a reactive transverse methane-oxygen mixture jet in crossflow (JICF). The jet injection arrangement is fundamentally investigated, including single jet and various double jets patterns. Corresponding two-dimensional direct numerical simulati… Show more

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Cited by 69 publications
(27 citation statements)
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“…The relationship between the flame arrival time and propagation distance indicates that once an explosion accident occurs in a long‐distance and low‐concentration gas transmission pipeline, the propagation speed of gas explosion flame will continuedly accelerate. Near the other end of pipeline, the explosive flame may react with the explosive shock wave and responsible for the critical state of detonation . According to explosion mechanics, once the detonation is generated, it can generate extremely high local pressure and causes severe damage.…”
Section: Resultsmentioning
confidence: 99%
“…The relationship between the flame arrival time and propagation distance indicates that once an explosion accident occurs in a long‐distance and low‐concentration gas transmission pipeline, the propagation speed of gas explosion flame will continuedly accelerate. Near the other end of pipeline, the explosive flame may react with the explosive shock wave and responsible for the critical state of detonation . According to explosion mechanics, once the detonation is generated, it can generate extremely high local pressure and causes severe damage.…”
Section: Resultsmentioning
confidence: 99%
“…The initial experimental conditions are listed in Table 1. Note that high oxygen concentrations and even pure fuel-oxygen systems are generally used to quickly obtain a DDT process in most studies [33][34][35]. In this study, a high oxygen concentration was used to analyze the in-depth mechanisms of end-gas autoignition in a confined space.…”
Section: Methodsmentioning
confidence: 99%
“…With the adaptive mesh refinement method, AMROC can accurately resolve the flame front, shock wave, and detonation, and thus has been successfully applied to the extensive studies of combustion. 53,[58][59][60][61][62]…”
Section: Methodsmentioning
confidence: 99%