Investigation on optimization design of an equivalent water depth truncated mooring system based on INSGA-II
Investigation on optimization design of an equivalent water depth truncated mooring system based on INSGA-II
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DOI：
10.1007/s11804-012-1124-3
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发表时间：
2012-06
影响因子：
1.8
通讯作者：
Huoming Zhang;Wenjun Gao;Qiang Wang;Juan Jiang;Zhou Zhao
中科院分区：
文献类型：
--
作者：
Huoming Zhang;Wenjun Gao;Qiang Wang;Juan Jiang;Zhou Zhao
目前，等效水深截断系泊系统优化设计被视为深海平台混合模型试验的优先方向，并将取代全水深系统试验。与全深系统相比，截头系统的工作深度和跨度较小，其它特性也保持较好的一致性。本文以一个工作水深为320 m、截断水深为80 m的内转塔系泊浮式生产储油卸油系统（FPSO）为研究对象。在此基础上，综合考虑整个系泊系统在水平和垂向的受力情况以及代表性单根系泊缆的静力特性相似性，采用改进的非支配排序遗传算法（INSGA-II）对等效水深截断系统进行优化计算。数值计算结果表明，所建立的数学模型是可行的，优化方法是快速有效的。
At present, equivalent water depth truncated mooring system optimization design is regarded as the priority of hybrid model testing for deep sea platforms, and will replace the full depth system test in the future. Compared with the full depth system, the working depth and span are smaller in the truncated one, and the other characteristics maintain more consistency as well. In this paper, an inner turret moored floating production storage & offloading system (FPSO) which works at a water depth of 320m, was selected to be a research example while the truncated water depth was 80m. Furthermore, an improved non-dominated sorting genetic algorithm (INSGA-II) was selected to optimally calculate the equivalent water depth truncated system, considering the stress condition of the total mooring system in both the horizontal and vertical directions, as well as the static characteristic similarity of the representative single mooring line. The results of numerical calculations indicate that the mathematical model is feasible, and the optimization method is fast and effective.