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Effect of chemical reactivity on the detonation initiation in shock accelerated flow in a confined space 被引量:4
1
作者 Yue-Jin Zhu Gang Dong +2 位作者 Yi-Xin Liu Bao-Chun Fan Hua Jiang 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2013年第1期54-61,共8页
The interactions of a spherical flame with an incident shock wave and its reflected shock wave in a confined space were investigated using the three-dimensional reactive Navier-Stokes equations, with emphasis placed o... The interactions of a spherical flame with an incident shock wave and its reflected shock wave in a confined space were investigated using the three-dimensional reactive Navier-Stokes equations, with emphasis placed on the effect of chemical reactivity of mixture on the flame distortion and detonation initiation after the passage of the reflected shock wave. It is shown that the spatio-temporal characteristics of detonation initiation depend highly on the chemi- cal reactivity of the mixture. When the chemical reactivity enhances, the flame can be severely distorted to form a reactive shock bifurcation structure with detonations initiating at different three-dimensional spatial locations. Moreover, the detonation initiation would occur earlier in a mixture of more enhanced reactivity. The results reveal that the detona- tions arise from hot spots in the unburned region which are initiated by the shock-detonation-transition mechanism. 展开更多
关键词 Chemical reactivity Reactive shock bifurcation structure ~ Detonation initiation hot spot Shock wave
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热点起爆理论的近似分枝点分析 被引量:2
2
作者 章冠人 《爆炸与冲击》 EI CAS CSCD 北大核心 1990年第3期193-197,共5页
本文用变分法对热点起爆理论进行了分枝点分析,并不是建立在热平衡条件的基础上,所以比较普遍。
关键词 热点 起爆 分枝点 爆炸力学
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