| 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.
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| Source Publication | COASTAL ENGINEERING
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| 2014-01 | |
| Volume | 83Pages:137-149 |
| ISSN | 0378-3839 |
| Abstract | 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. |
| Keyword | Pipeline Scour Free Span Scour Rates Waves Combined Wave And Current |
| Subject Area | 水动力学 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000328662800013 |
| Funding Organization | Australian Research Council [LP0989936]; National Natural Science Foundation of China [51109202]; Dalian University of Technology (DUT) |
| Department | LMFS流固土耦合力学(LHO) |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/48086 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Cheng, 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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| IMCAS-J2014-008.pdf（1363KB） | 开放获取 | -- | View Download | |||
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