FPSO与穿梭油轮的旁靠时域分析及系统优化

施兴华，于泽群*，章柯，刘勤江苏科技大学船舶与海洋工程学院，江苏镇江 212003

引用格式：施兴华, 于泽群, 章柯, 等. FPSO与穿梭油轮的旁靠时域分析及系统优化 [J]. 中国舰船研究, 2020, 15(1): 127–135. SHI X H, YU Z Q, ZHANG K, et al. Time domain analysis and system optimization of side-by-side mooring for FPSO and shuttle tanker[J]. Chinese Journal of Ship Research, 2020, 15(1): 127–135.

摘 要:［目的］针对FPSO在中国南海海域的作业海况，对多点系泊系统和FPSO与穿梭油轮的旁靠耦合系统进行时域分析及优化研究。［方法］ 运用AQWA及势流理论进行时域分析，优化系泊缆分段及其比例、导缆孔位置，并使用 Fluent数值求解方法，分析两船旁靠时吃水变化对风浪流载荷的影响。［结果］结果表明：顶段为 200 m钢缆、底段为 316 m船链最适合 200 m水深的 FPSO多点系泊结构；旁靠缆张紧或者旁靠缆增重可以降低穿梭油轮的运动幅度，将导缆孔位置向船舯移动后，护舷和系泊缆的受力更加均匀；当旁靠缆重量为 135 kg/m时，护舷和旁靠缆受力极值和平均值达到最小。［结论］所得结果可加深系泊参数对系泊缆张力及船舶运动影响的理解，并对优化系泊方案设计具有一定的参考价值。关键词：旁靠系泊；多点系泊；浮式生产储卸油轮；穿梭油轮；时域分析；优化中图分类号: U661.3 文献标志码:A DOI：10.19693/j.issn.1673-3185.01400

Time domain analysis and system optimization of side-by-side mooring for FPSO and shuttle tanker

SHI Xinghua, YU Zequn*, ZHANG Ke, LIU Qin

School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China

Abstract: ［Objectives］In view of the operational sea conditions of FPSO (Floating Production Storage and Offloading) ships in the South China Sea, this paper studies the optimization of the multi-point mooring system and side-by-side coupling system of FPSO ships and shuttle tankers. ［Methods］ANSYS-AQWA software and the potential flow theory is used to conduct time-domain analysis, optimize the mooring line segments and proportions, as well as the position of the fairlead; and Fluent software is used to analyze the influence of the change of draft on the wind and current load when the two ships are abreast.［Results］The results show that a top section of 200 m of steel cable and a bottom section of 316 m of ship chain is the most suitable FPSO multi-point mooring structure for a water depth of 200 m. Maintaining tension on the side-byside mooring line or increasing its weight can reduce the movement range of the shuttle tanker. After the position of the fairlead is moved to midship, the forces on the fender and mooring line become more uniform. When the weight of the alongside cable is 135 kg/m, the maximum and average values of the fender and alongside cable forces can be minimized.［Conclusions ］The results of this study have reference value for better understanding the influence of mooring parameters on mooring line tension and its influence on the movement of the ship, and can be used to optimize the design of mooring schemes. Key words: side-by-side mooring； multi-point mooring； Floating Production Storage and Offloading (FPSO) ship；shuttle tanker；time-domain analysis；optimization

收稿日期: 2018–09–02 修回日期: 2019–11–24 网络首发时间: 2020–03–23 16:03基金项目: 国家自然科学基金资助项目 (51509113，51809126)；江苏省自然科学基金资助项目（BK20181468）；江苏省高校自然科学基金资助项目 (16KJA580003)作者简介: 施兴华，男，1981 年生，博士，教授。研究方向：船舶与海洋工程结构水动力性能。E-mail：shixinghua9@163.com于泽群，男，1994 年生，硕士生。研究方向：海洋工程水动力。E-mail：734048371@qq.com *通信作者:于泽群