Wave Dynamic Processes in Cellular Detonation Reflection from Wedges

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	Wave Dynamic Processes in Cellular Detonation Reflection from Wedges
	Hu ZM(胡宗民); Jiang ZL(姜宗林)
刊名	Acta Mechanica Sinica
	2007
通讯作者邮箱	bighumin@126.com
卷号	23 期号:1 页码:33-41
ISSN号	0567-7718
通讯作者	Hu, ZM (reprint author), Chinese Acad Sci, Inst Mech, LHD, Beijing 100080, Peoples R China.
中文摘要	When the cell width of the incident detonation wave (IDW) is comparable to or larger than the Mach stem height, self-similarity will fail during IDW reflection from a wedge surface. In this paper, the detonation reflection from wedges is investigated for the wave dynamic processes occurring in the wave front, including transverse shock motion and detonation cell variations behind the Mach stem. A detailed reaction model is implemented to simulate two-dimensional cellular detonations in stoichiometric mixtures of H (2)/O (2) diluted by Argon. The numerical results show that the transverse waves, which cross the triple point trajectory of Mach reflection, travel along the Mach stem and reflect back from the wedge surface, control the size of the cells in the region swept by the Mach stem. It is the energy carried by these transverse waves that sustains the triple-wave-collision with a higher frequency within the over-driven Mach stem. In some cases, local wave dynamic processes and wave structures play a dominant role in determining the pattern of cellular record, leading to the fact that the cellular patterns after the Mach stem exhibit some peculiar modes.
学科主题	力学
类目[WOS]	Engineering, Mechanical ; Mechanics
研究领域[WOS]	Engineering ; Mechanics
收录类别	SCI ; EI ; CSCD
WOS记录号	WOS:000244391600005
公开日期	2007-06-15
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16816]
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,Jiang ZL. Wave Dynamic Processes in Cellular Detonation Reflection from Wedges[J]. Acta Mechanica Sinica,2007,23(1):33-41.
APA	胡宗民,&姜宗林.(2007).Wave Dynamic Processes in Cellular Detonation Reflection from Wedges.Acta Mechanica Sinica,23(1),33-41.
MLA	胡宗民,et al."Wave Dynamic Processes in Cellular Detonation Reflection from Wedges".Acta Mechanica Sinica 23.1(2007):33-41.