基于AQWA的南海半潜式海洋平台系泊系统破断分析
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摘要
本文基于三维势流理论,针对南海海域工作的某半潜式海洋平台,运用水动力分析软件AQWA进行频域分析和时域分析,得到不同环境下海洋平台的附加质量、兴波阻尼系数等水动力系数以及各自由度的幅值响应传递函数。在此基础上,考虑风浪流对海洋平台的联合作用,以及系泊系统与海洋平台之间的耦合作用,在时域内研究了海洋平台在南海百年一遇极端海况下的运动响应及系泊缆绳的张力,分析系泊破断时平台运动响应和缆绳张力的变化情况,分析结果可为南海海域半潜式海洋平台的初步设计提供相应的科学依据。
Based on the three-dimensional potential flow theory, this paper uses the hydrodynamic analysis software AQWA to perform frequency domain analysis and time domain analysis on a semi-submersible offshore platform working in the South China Sea. The additional mass and wave damping coefficient of the ocean platform in different environments are obtained. The hydrodynamic coefficients and the amplitude response transfer functions(RAOs) of the respective degrees. On this basis, considering the combined effect of wind and wave on the offshore platform, considering the coupling between the mooring system and the offshore platform, the motion response and mooring of the offshore platform in a once-in-a-century extreme sea condition of the south China sea are studied in the time domain. The changes of platform motion response and mooring line tension during mooring line breakage are considered and analyzed, which will provide a corresponding scientific basis for the preliminary design of the semi-submersible offshore platform in the South China Sea.
Based on the three-dimensional potential flow theory, this paper uses the hydrodynamic analysis software AQWA to perform frequency domain analysis and time domain analysis on a semi-submersible offshore platform working in the South China Sea. The additional mass and wave damping coefficient of the ocean platform in different environments are obtained. The hydrodynamic coefficients and the amplitude response transfer functions(RAOs) of the respective degrees. On this basis, considering the combined effect of wind and wave on the offshore platform, considering the coupling between the mooring system and the offshore platform, the motion response and mooring of the offshore platform in a once-in-a-century extreme sea condition of the south China sea are studied in the time domain. The changes of platform motion response and mooring line tension during mooring line breakage are considered and analyzed, which will provide a corresponding scientific basis for the preliminary design of the semi-submersible offshore platform in the South China Sea.
引文
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[9]李亚男,唐文献,等.基于锚泊系统的半潜式海洋平台系泊缆长度优化方法研究[J].船舶工程,2014,36(3).
[10]严琦,郭建廷,等.半潜式海洋平台水动力性能分析[J].中国水运,2018,18(9).
[2]李辉,任慧龙,陈北燕,等.深水半潜式平台波浪载荷计算方研究[J].华中科技大学学报(自然科学版),2009,37(3).
[3]王世圣,谢彬,冯玮,等.两种典型深水半潜式钻井平台运动特性和波浪载荷的计算[J].中国海上油气,2008,20(5).
[4]宋安科.深水半潜式钻井平台锚泊系统方案设计与分析[D].哈尔滨工程大学,2008.
[5]吴澜,吴宝山,等.基于AWQA的半潜式平台水动力特性研究[J].中国海洋平台,2014,29(5).
[6]唐文献,高泽,等.基于AWQA的2种立柱结构的半潜式海洋平台水动力特性研究[J].船舶科学技术,2017,39(5).
[7]陈明璐,嵇春艳,刘珍.半潜式海洋平台的水动力分析及波浪载荷预报[J].海洋技术,2012,31(4).
[8]童波,杨建民,李欣.深水半潜平台悬链线式系泊系统耦合动力分析[J].中国海洋平台,2008,23(6).
[9]李亚男,唐文献,等.基于锚泊系统的半潜式海洋平台系泊缆长度优化方法研究[J].船舶工程,2014,36(3).
[10]严琦,郭建廷,等.半潜式海洋平台水动力性能分析[J].中国水运,2018,18(9).