FLOW-PIPE-SEEPAGE COUPLING ANALYSIS OF SPANNING INITIATION OF A PARTIALLY-EMBEDDED PIPELINE

doi:10.1016/S1001-6058(09)60079-2

IMECH-IR > 水动力学与海洋工程重点实验室(2009-2011)

	FLOW-PIPE-SEEPAGE COUPLING ANALYSIS OF SPANNING INITIATION OF A PARTIALLY-EMBEDDED PIPELINE
	Gao FP(高福平); Luo CC; Gao FP
发表期刊	Journal of Hydrodynamics
	2010
卷号	22 期号:4 页码:478-487
ISSN	1001-6058
摘要	The initiation of pipeline spanning involves the coupling between the flow over the pipeline and the seepage-flow in the soil underneath the pipeline. The pipeline spanning initiation is experimentally observed and discussed in this article. It is qualitatively indicated that the pressure-drop induced soil seepage failure is the predominant cause for pipeline spanning initiation. A flow-pipe-seepage sequential coupling Finite Element Method (FEM) model is proposed to simulate the coupling between the water flow-field and the soil seepage-field. A critical hydraulic gradient is obtained for oblique seepage failure of the sand in the direction tangent to the pipe. Parametric study is performed to investigate the effects of inflow velocity, pipe embedment on the pressure-drop, and the effects of soil internal friction angle and pipe embedment-to-diameter ratio on the critical flow velocity for pipeline spanning initiation. It is indicated that the dimensionless critical flow velocity changes approximately linearly with the soil internal friction angle for the submarine pipeline partially-embedded in a sandy seabed.
关键词	Submarine Pipeline Pipeline Spanning Seepage Failure Flow-pipe-seepage Coupling Submarine Pipelines Local Scour Simulation
DOI	10.1016/S1001-6058(09)60079-2
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000283566900004
关键词[WOS]	SUBMARINE PIPELINES ; LOCAL SCOUR ; SIMULATION
WOS研究方向	Mechanics
WOS类目	Mechanics
项目资助者	National Natural Science Foundation of China [10532070] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-YW-L02]
引用统计	被引频次：25[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/311007/43597
专题	水动力学与海洋工程重点实验室(2009-2011)
通讯作者	Gao FP
推荐引用方式 GB/T 7714	Gao FP,Luo CC,Gao FP. FLOW-PIPE-SEEPAGE COUPLING ANALYSIS OF SPANNING INITIATION OF A PARTIALLY-EMBEDDED PIPELINE[J]. Journal of Hydrodynamics,2010,22,4,:478-487.
APA	高福平,Luo CC,&Gao FP.(2010).FLOW-PIPE-SEEPAGE COUPLING ANALYSIS OF SPANNING INITIATION OF A PARTIALLY-EMBEDDED PIPELINE.Journal of Hydrodynamics,22(4),478-487.
MLA	高福平,et al."FLOW-PIPE-SEEPAGE COUPLING ANALYSIS OF SPANNING INITIATION OF A PARTIALLY-EMBEDDED PIPELINE".Journal of Hydrodynamics 22.4(2010):478-487.

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