Shock wave reflection from a wedge in a dusty gas
文献类型：期刊论文
| 作者 | Igra O; Hu G; Falcovitz J; Wang BY(王伯懿)
|
| 刊名 | International Journal of Multiphase Flow
 |
| 出版日期 | 2004 |
| 卷号 | 30期号:9页码:1139-1169 |
| 关键词 | Shock Waves In Suspensions Shock Wave Reflection Propagation Flows |
| ISSN号 | 0301-9322 |
| 通讯作者 | Igra, O (reprint author), Ben Gurion Univ Negev, Dept Mech Engn, Pearlstone Ctr Aeronaut Engn Studies, Beer Sheva, Israel. |
| 中文摘要 | 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. |
| 类目[WOS] | Mechanics |
| 研究领域[WOS] | Mechanics |
| 关键词[WOS] | PROPAGATION ; FLOWS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000224003100005 |
| 公开日期 | 2009-08-03 ; 2010-06-13 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/33767]  |
| 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 | 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.(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. |
入库方式： OAI收割
来源：力学研究所
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