3D scour below pipelines under waves and combined waves and currents

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	3D scour below pipelines under waves and combined waves and currents
	Cheng L; Yeow K; Zang ZP(臧志鹏); Li FJ; Cheng, L (reprint author), Univ Western Australia, Sch Civil & Resource Engn, 35 Stirling Highway, Crawley, WA 6009, Australia.
发表期刊	COASTAL ENGINEERING
	2014-01
卷号	83 页码:137-149
ISSN	0378-3839
摘要	This paper presents the results of an experimental investigation on three-dimensional local scour below a rigid pipeline subjected to wave only and combined wave and current conditions. The tests were conducted in a conventional wave flume. The major emphasis of the investigation was on the scour propagation speed (free span expansion rate) along the pipeline after local scour was initiated at a controlled location. The effects of flow ratio (steady current velocity vs. combined waves/current velocity), flow incidence angle and pipeline initial embedment depth on free span expansion rate were investigated. It was observed that the scour along the pipeline propagated at a constant rate under wave only conditions. The scour propagation rate decreased with increasing embedment depth, however, increased with the increasing Keuglegan-Carpenter (KC) number. Under combined wave and current conditions, the effect of velocity ratio on scour propagation velocity along the pipeline was quantified. Empirical relationships between the scour propagation rate (Vh) and key parameters such as the KC number and embedment depth (e/D) were established based on the testing results.
关键词	Pipeline Scour Free Span Scour Rates Waves Combined Wave And Current
学科领域	水动力学
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000328662800013
项目资助者	Australian Research Council [LP0989936]; National Natural Science Foundation of China [51109202]; Dalian University of Technology (DUT)
课题组名称	LMFS流固土耦合力学(LHO)
论文分区	一类
引用统计	被引频次：66[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/311007/48086
专题	流固耦合系统力学重点实验室
通讯作者	Cheng, L (reprint author), Univ Western Australia, Sch Civil & Resource Engn, 35 Stirling Highway, Crawley, WA 6009, Australia.
推荐引用方式 GB/T 7714	Cheng L,Yeow K,Zang ZP,et al. 3D scour below pipelines under waves and combined waves and currents[J]. COASTAL ENGINEERING,2014,83:137-149.
APA	Cheng L,Yeow K,臧志鹏,Li FJ,&Cheng, L .(2014).3D scour below pipelines under waves and combined waves and currents.COASTAL ENGINEERING,83,137-149.
MLA	Cheng L,et al."3D scour below pipelines under waves and combined waves and currents".COASTAL ENGINEERING 83(2014):137-149.

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