Knowledge Management System of Institue of Mechanics, CAS
| FLOW-PIPE-SEEPAGE COUPLING ANALYSIS OF SPANNING INITIATION OF A PARTIALLY-EMBEDDED PIPELINE | |
Gao FP(高福平) ; Luo CC; Gao FP
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| Source Publication | Journal of Hydrodynamics
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| 2010 | |
| Volume | 22Issue:4Pages:478-487 |
| ISSN | 1001-6058 |
| Abstract | 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. |
| Keyword | 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 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000283566900004 |
| WOS Keyword | SUBMARINE PIPELINES ; LOCAL SCOUR ; SIMULATION |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Funding Organization | National Natural Science Foundation of China [10532070] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-YW-L02] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://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 Author | Gao 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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