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
Source PublicationJournal of Hydrodynamics
2010
Volume22Issue:4Pages:478-487
ISSN1001-6058
AbstractThe 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.
KeywordSubmarine Pipeline Pipeline Spanning Seepage Failure Flow-pipe-seepage Coupling Submarine Pipelines Local Scour Simulation
DOI10.1016/S1001-6058(09)60079-2
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000283566900004
WOS KeywordSUBMARINE PIPELINES ; LOCAL SCOUR ; SIMULATION
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational Natural Science Foundation of China [10532070] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-YW-L02]
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43597
Collection水动力学与海洋工程重点实验室(2009-2011)
Corresponding AuthorGao FP
Recommended Citation
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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