| Shallow Water Effects on Surge Motion and Load of Soft Yoke Moored FPSO |
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| 作者姓名： | 肖龙飞 杨建民 李欣 |
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| 作者单位： | State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University，State Key Laboratory of Ocean Engineering，Shanghai Jiao Tong University，State Key Laboratory of Ocean Engineering，Shanghai Jiao Tong University，Shanghai 200030，China，Shanghai 200030，China，Shanghai 200030，China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | Much attention should be paid to a large FPSO moored permanently in an oil field with water depth of only about 20 m, since shallow water effects on the hydrodynamics may bring about collision and damage. A 160kDWT FPSO with a permanent soft yoke mooring system is investigated with various shallow water depths and focuses are the low frequency surge motion and mooring load. Computation for the FPSO system is made based on linear 3-D potential fluid theory and time-domain numerical simulation method. Corresponding model test is carried out in the ocean engineering basin of Shanghai Jiao Tong University. It is shown that, in the surge natural period, low frequency surge motion and mooring force increase remarkably with the decrease of water depth. Especially, the smaller the ratio of water depth and draught is, the quicker the increase is. The shallow water effects should be taken into account carefully for determining the design load of a single point mooring system.
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| 关 键 词： | 浅水区 海上浮式生产储油轮 软刚臂系泊系统 海上油气开发 |
| 修稿时间： | 2006-05-292007-03-20 |
Shallow Water Effects on Surge Motion and Load of Soft Yoke Moored FPSO |
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| XIAO Long-fei,YANG Jian-min,LI Xin.Shallow Water Effects on Surge Motion and Load of Soft Yoke Moored FPSO[J].China Ocean Engineering,2007,21(2):187-196. |
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| Authors: | XIAO Long-fei YANG Jian-min LI Xin |
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| Institution: | State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China |
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| Abstract: | Much attention should be paid to a large FPSO moored permanently in an oil field with water depth of only about 20 m, since shallow water effects on the hydrodynamics may bring about collision and damage. A 160kDWT FPSO with a permanent soft yoke mooring system is investigated with various shallow water depths and focuses are the low frequency surge motion and mooring load. Computation for the FPSO system is made based on linear 3-D potential fluid theory and time-domain numerical simulation method. Corresponding model test is carried out in the ocean engineering basin of Shanghai Jiao Tong University. It is shown that, in the surge natural period, low frequency surge motion and mooring force increase remarkably with the decrease of water depth. Especially, the smaller the ratio of water depth and draught is, the quicker the increase is. The shallow water effects should be taken into account carefully for determining the design load of a single point mooring system. |
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| Keywords: | FPSO shallow water surge soft yoke mooring system |
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