| Experimental Study on Coupled Cross-Flow and in-Line Vortex-Induced Vibration of Flexible Risers |
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| 作者姓名： | 郭海燕 娄敏 |
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| 作者单位： | College of Engineering Ocean University of China，College of Engineering，Ocean University of China，Qingdao 266071，China，Qingdao 266071，China |
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| 基金项目： | the High Technology Research and Developmant Program of China，国家自然科学基金 |
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| 摘 要： | In this work, we study the coupled cross-flow and in-line vortex-induced vibration （VIV） of a fixedly mounted flexible pipe, which is free to move in cross-flow （ Y- ） and in-line （ X- ） direction in a fluid flow where the mass and natural frequencies are precisely the same in both X- and Y-direction. The fluid speed varies from low to high with the corresponding vortex shedding frequency varying from below the first natural frequency to above the second natural frequency of the flexible pipe. Particular emphasis was placed on the investigation of the relationship between in-line and cross-flow vibration. The experimental results analyzed by using these measurements exhibits several valuable features.
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| 关 键 词： | 涡流振动 海洋工程 自然频率 海水 |
Experimental Study on Coupled Cross-Flow and in-Line Vortex-Induced Vibration of Flexible Risers |
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| GUO Hai-yan,LOU Min.Experimental Study on Coupled Cross-Flow and in-Line Vortex-Induced Vibration of Flexible Risers[J].China Ocean Engineering,2008,22(1):123-129. |
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| Authors: | GUO Hai-yan LOU Min |
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| Institution: | College of Engineering, Ocean University of China, Qingdao 266071, China |
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| Abstract: | In this work, we study the coupled cross-flow and in-line vortex-induced vibration (VIV) of a fixedly mounted flexible pipe, which is free to move in cross-flow (Y-) and in-line (X-) direction in a fluid flow where the mass and natural frequencies are precisely the same in both X- and Y-direction. The fluid speed varies from low to high with the corresponding vortex shedding frequency varying from below the first natural frequency to above the second natural frequency of the flexible pipe. Particular emphasis was placed on the investigation of the relationship between in-line and cross-flow vibration. The experimental results analyzed by using these measurements exhibits several valuable features. |
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| Keywords: | flexible riser vortex-induced vibration cross-flow vibration in-line vibration |
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