Dynamic Characteristics of Spherically Converging Detonation Waves

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Dynamic Characteristics of Spherically Converging Detonation Waves
	Jiang ZL(姜宗林); Chang LN(常利娜); Zhang F
刊名	Shock Waves
	2007
通讯作者邮箱	zljiang@imech.ac.cn
卷号	16 期号:3 页码:257-267
ISSN号	0938-1287
通讯作者	Jiang, ZL (reprint author), Chinese Acad Sci, Inst Mech, Key Lab High Temp Gas Dynam, 15 Zhong Guan Cun Rd, Beijing 100080, Peoples R China.
中文摘要	The spherically converging detonation wave was numerically investigated by solving the one-dimensional multi-component Euler equations in spherical coordinates with a dispersion-controlled dissipative scheme. Finite rate and detailed chemical reaction models were used and numerical solutions were obtained for both a spherical by converging detonation in a stoichiometric hydrogen-oxygen mixture and a spherically focusing shock in air. The results showed that the post-shock pressure approximately arises to the same amplitude in vicinity of the focal point for the two cases, but the post-shock temperature level mainly depends on chemical reactions and molecular dissociations of a gas mixture. While the chemical reaction heat plays an important role in the early stage of detonation wave propagation, gas dissociations dramatically affect the post-shock flow states near the focal point. The maximum pressure and temperature, non-dimensionalized by their initial value, are approximately scaled to the propagation radius over the initial detonation diameter. The post-shock pressure is proportional to the initial pressure of the detonable mixture, and the post-shock temperature is also increased with the initial pressure, but in a much lower rate than that of the post-shock pressure.
学科主题	力学
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
收录类别	SCI
语种	英语
WOS记录号	WOS:000243972500007
公开日期	2007-06-15
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/15986]
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	Jiang ZL,Chang LN,Zhang F. Dynamic Characteristics of Spherically Converging Detonation Waves[J]. Shock Waves,2007,16(3):257-267.
APA	姜宗林,常利娜,&Zhang F.(2007).Dynamic Characteristics of Spherically Converging Detonation Waves.Shock Waves,16(3),257-267.
MLA	姜宗林,et al."Dynamic Characteristics of Spherically Converging Detonation Waves".Shock Waves 16.3(2007):257-267.