IMECH-IR  > 水动力学与海洋工程重点实验室(2009-2011)
Probability of Sediment Incipient Motion Under Complex Flows
Liu CR(刘春嵘); Deng LY(邓丽颖); 呼和敖德
Source PublicationChina Ocean Engineering
2010
Volume24Issue:1Pages:93-104
ISSN0890-5487
AbstractPresented in this paper is a mathematical model to calculate the probability of the sediment incipient motion, in which the effects of the fluctuating pressure and the seepage are considered. The instantaneous bed shear velocity and the pressure gradient on the bed downstream of the backward-facing step flow are obtained according to the PIV measurements. It is found that the instantaneous pressure gradient on the bed obeys normal distribution. The probability of the sediment incipient motion on the bed downstream of the backward-facing step flow is given by the mathematical model. The predicted results agree well with the experiment in the region downstream of the reattachment point while a large discrepancy between the theory and experiment is seen in the region near the reattachment point. The possible reasons for this discrepancy are discussed.
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Indexed BySCI
Language英语
WOS IDWOS:000276828200008
WOS KeywordBACKWARD-FACING STEP ; NUMERICAL-SIMULATION ; LOCAL SCOUR ; WAVE ACTION ; TRANSPORT ; THRESHOLD ; MOVEMENT ; CURRENTS
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Civil ; Engineering, Ocean ; Engineering, Mechanical ; Water Resources
Funding OrganizationNational Natural Science Foundation of China [10602017]
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43607
Collection水动力学与海洋工程重点实验室(2009-2011)
Recommended Citation
GB/T 7714
Liu CR,Deng LY,呼和敖德. Probability of Sediment Incipient Motion Under Complex Flows[J]. China Ocean Engineering,2010,24(1):93-104.
APA 刘春嵘,Deng LY,&呼和敖德.(2010).Probability of Sediment Incipient Motion Under Complex Flows.China Ocean Engineering,24(1),93-104.
MLA 刘春嵘,et al."Probability of Sediment Incipient Motion Under Complex Flows".China Ocean Engineering 24.1(2010):93-104.
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