Experiment Study on Sediment Incipience in Backward-Facing Step Flow
文献类型：期刊论文
| 作者 | Liu CR(刘春嵘) ; 呼和敖德; Tao LB
|
| 刊名 | JOURNAL OF HYDRODYNAMICS
 |
| 出版日期 | 2007 |
| 卷号 | 19期号:2页码:173-179 |
| 通讯作者邮箱 | liucr@tsinghua.edu.cn |
| 关键词 | backward-facing step flow coherent structure sediment incipience Particle Tracking Velocimetry (PTV) |
| ISSN号 | 1001-6058 |
| 产权排序 | [Liu Chun-rong] Hunan Univ, Dept Engn Mech, Changsha 410082, Hunan, Peoples R China; [Aode, Huhe] Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China; [Tao Long-bin] Griffith Univ, Sch Engn, Griffith, Qld 9726, Australia |
| 通讯作者 | Liu, CR (reprint author), Hunan Univ, Dept Engn Mech, Changsha 410082, Hunan, Peoples R China. |
| 中文摘要 | Flow over a backward-facing step was studied to investigate the effect of large-scale vortex structures on sediment incipience. The transient flow velocity field at the downstream of the backward-facing step was obtained using the technique of Particle Tracking Velocimetry (PTV). The optical amplification technique was employed to measure the instantaneous flow velocities near the bed and the instantaneous bed shear stress was given. The experimental observations revealed a new insight into the oscillation of the large-scale structure and the three-dimensional characteristics of the flow. In particular, very high turbulence intensity, instantaneous horizontal velocity near the bed and the bed shear stress near the reattachment point were observed. The sediment incipient probability obtained from the sequent images of sediment particles near the bed indicates that the critical instantaneous shear stress of the sediment incipience is independent of flow conditions. |
| 类目[WOS] | Mechanics |
| 研究领域[WOS] | Mechanics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000208247800008 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/58442]  |
| 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 | Liu CR,呼和敖德,Tao LB. Experiment Study on Sediment Incipience in Backward-Facing Step Flow[J]. JOURNAL OF HYDRODYNAMICS,2007,19(2):173-179. |
| APA | 刘春嵘,呼和敖德,&Tao LB.(2007).Experiment Study on Sediment Incipience in Backward-Facing Step Flow.JOURNAL OF HYDRODYNAMICS,19(2),173-179. |
| MLA | 刘春嵘,et al."Experiment Study on Sediment Incipience in Backward-Facing Step Flow".JOURNAL OF HYDRODYNAMICS 19.2(2007):173-179. |
入库方式： OAI收割
来源：力学研究所
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