中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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