IMECH-IR  > 流固耦合系统力学重点实验室
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.
Source PublicationCOASTAL ENGINEERING
2014-01
Volume83Pages:137-149
ISSN0378-3839
AbstractThis 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.
KeywordPipeline Scour Free Span Scour Rates Waves Combined Wave And Current
Subject Area水动力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000328662800013
Funding OrganizationAustralian Research Council [LP0989936]; National Natural Science Foundation of China [51109202]; Dalian University of Technology (DUT)
DepartmentLMFS流固土耦合力学(LHO)
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48086
Collection流固耦合系统力学重点实验室
Corresponding AuthorCheng, L (reprint author), Univ Western Australia, Sch Civil & Resource Engn, 35 Stirling Highway, Crawley, WA 6009, Australia.
Recommended Citation
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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