| Experimental Study on Vortex-Induced Vibrations of Submarine Pipeline near Seabed Boundary in Ocean Currents |
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| 作者姓名： | 杨兵 高福平 吴应湘 李东晖 |
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| 作者单位： | Institute of Mechanics Chinese Academy of Sciences Beijing100080，China，Institute of Mechanics Chinese Academy of Sciences Beijing100080，China，Institute of Mechanics Chinese Academy of Sciences Beijing100080，China，Institute of Mechanics Chinese Academy of Sciences Beijing100080，China |
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| 基金项目： | The project was financially supported by the Tenth Five-Year Plan of the Chinese Academy of Sciences （ Grant No. KJCX2- SW- L03 ） |
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| 摘 要： | 1 .IntroductionThe submarine pipeline is a commonfacility widely usedfor offshore oil and gastransport . Whena pipeline is installed on a seabed and not buried,unsupportedspans may exist insomelocations ,es-peciallyinthe uneven zones of the seabed.The spa…
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| 关 键 词： | 潜水艇 管道 震动 海洋 海床 |
| 收稿时间： | 2005-09-20 |
| 修稿时间： | 2006-01-08 |
Experimental Study on Vortex-Induced Vibrations of Submarine Pipeline near Seabed Boundary in Ocean Currents |
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| YANG Bing,GAO Fu-ping,WU Ying-xiang,LI Dong-hui.Experimental Study on Vortex-Induced Vibrations of Submarine Pipeline near Seabed Boundary in Ocean Currents[J].China Ocean Engineering,2006,20(1):113-121. |
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| Authors: | YANG Bing GAO Fu-ping WU Ying-xiang LI Dong-hui |
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| Abstract: | Unlike most previous studies on vortex-induced vibrations of a cylinder far from a boundary,this paper focuses on the influences of close proximity of a submarine pipeline to a rigid seabed boundary upon the dynamic responses of the pipeline in ocean currents.The effects of gap-to-diameter ratio and those of the stability parameter on the amplitude and frequency responses of a pipeline are investigated experimentallywith a novel hydro-elastic facility.A comparison is made between the present experimental results of the amplitude and frequency responses for the pipes with seabed boundary ef-fects and those for wall-free cylinders given by Govardhan and Williamson(2000)and Anand(1985).The comparison shows that the close proximity of a pipeline to seabed has much influence on the vortex-induced vibrations of the pipeline.Both the width of the lock-in ranges in terms of V r and the dimensionless amplitude ratio A max /D become larger with the decrease of the gap-to-diameter ratio e/D.Moreover,the vibration of the pipeline becomes easier to occur and its ampli-tude response becomes more intensive with the decrease of the stability parameter,while the pipeline frequency responses are affected slightly by the stability parameter. |
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| Keywords: | submarine pipeline vortex-induced vibrations ocean current seabed |
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