Transition Between Detonation and Deflagration in a Tube with a Cavity

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	Transition Between Detonation and Deflagration in a Tube with a Cavity
	Hu ZM(胡宗民); Liu CL; Zhang DL(张德良); Jiang ZL(姜宗林)
	2004-07-11
会议名称	24th International Symposium on Shock Waves, JUL 11-16, 2004 Beijing, PEOPLES R CHINA
通讯作者	张德良
中文摘要	In this paper, the transition of a detonation from deflagration was investigated numerically while a detonation wave propagates in a tube with a sudden change in cross section, referred to as the expansion cavity. The dispersion-controlled scheme was adopted to solve Euler equations of axis-symmetric flows implemented with detailed chemical reaction kinetics of hydrogen-oxygen (or hydrogen-air) mixture. The fractional step method was applied to treat the stiff problems of chemical reaction flow. It is observed that phenomena of detonation quenching and reigniting appear when the planar detonation front diffracts at the vertex of the expansion cavity entrance. Numerical results show that detonation front in mixture of higher sensitivity keeps its substantial coupled structure when it propagates into the expansion cavity. However, the leading shock wave decouples with the combustion zone if mixture of lower sensitivity was set as the initial gas.
收录类别	CPCI-S
会议录	Shock Waves, Vols 1 and 2, Proceedings of the 24th International Symposium on Shock Waves, 2004 Beijing, p.831-836, Published: 2005
学科主题	力学
语种	英语
WOS记录号	WOS:000231243300125
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/13943]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Hu ZM,Liu CL,Zhang DL,et al. Transition Between Detonation and Deflagration in a Tube with a Cavity[C]. 见:24th International Symposium on Shock Waves, JUL 11-16, 2004 Beijing, PEOPLES R CHINA.