Shock wave reflection from a wedge in a dusty gas

doi:10.1016/j.ijmultiphaseflow.2004.05.008

IMECH-IR > 力学所知识产出(1956-2008)

	Shock wave reflection from a wedge in a dusty gas
	Igra O; Hu G; Falcovitz J; Wang BY(王伯懿); Igra, O (reprint author), Ben Gurion Univ Negev, Dept Mech Engn, Pearlstone Ctr Aeronaut Engn Studies, Beer Sheva, Israel.
发表期刊	International Journal of Multiphase Flow
	2004
卷号	30 期号:9 页码:1139-1169
ISSN	0301-9322
摘要	The present paper contains a detailed study of shock wave reflection from a wedge placed in various suspensions. In past works, the incident shock propagated initially in pure gas and the suspension started only at the leading edge of the deflecting wedge. However, in the present case the entire flow field is filled with a gas-dust suspension and the initial shock wave has steady-state structure relative to the shock front. In former studies the transmitted shock wave starts its propagation into the suspension and is reflected from the wedge at the same time. It is therefore obvious that the two unrelated processes of (2D) reflection and (1D) "transitional" relaxation occur simultaneously. In the present case the suspension behind the incident shock wave has reached steady state (i.e., it is a traveling wave) before the shock reaches the wedge leading edge. The reflection process from the deflecting wedge is studied for different dust mass loadings and different dust-particle diameter. It is shown that when the dust loading is low and the dust particle diameter is small the wave reflection pattern is similar to that observed in a similar pure gas case. In addition, an equilibrium state is reached, behind the evolved waves, very quickly. On the other hand, when the dust loading is relatively high and/or the dust particle diameter is relatively large, the observed reflection wave pattern is very different from that seen in a similar pure gas case. In such cases it takes much longer time to reach an equilibrium state behind the reflecting waves. It is also shown that the dust presence significantly affects the (gas) pressure on the wedge surface. The higher the dust loading is, the higher the pressure on the wedge surface. Suspensions composed of solid particle of different size, but having the same dust mass loading, will approach the same equilibrium pressure. However, it will take longer time to reach an equilibrium state for suspensions having large diameter particles. (C) 2004 Elsevier Ltd. All rights reserved.
关键词	Shock Waves In Suspensions Shock Wave Reflection Propagation Flows
DOI	10.1016/j.ijmultiphaseflow.2004.05.008
收录类别	SCI
语种	英语
WOS记录号	WOS:000224003100005
关键词[WOS]	PROPAGATION ; FLOWS
WOS研究方向	Mechanics
WOS类目	Mechanics
引用统计	被引频次：46[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/33767
专题	力学所知识产出(1956-2008)
通讯作者	Igra, O (reprint author), Ben Gurion Univ Negev, Dept Mech Engn, Pearlstone Ctr Aeronaut Engn Studies, Beer Sheva, Israel.
推荐引用方式 GB/T 7714	Igra O,Hu G,Falcovitz J,et al. Shock wave reflection from a wedge in a dusty gas[J]. International Journal of Multiphase Flow,2004,30,9,:1139-1169.
APA	Igra O,Hu G,Falcovitz J,王伯懿,&Igra, O .(2004).Shock wave reflection from a wedge in a dusty gas.International Journal of Multiphase Flow,30(9),1139-1169.
MLA	Igra O,et al."Shock wave reflection from a wedge in a dusty gas".International Journal of Multiphase Flow 30.9(2004):1139-1169.

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