基于三维势流理论，研究圆筒型FPSO在南海百年一遇生存海况下运动响应。针对圆筒型FPSO垂荡运动性能较差的问题，提出将平台水线处筒体直径减小，采用JONSWAP谱生成随机波，对改进后的圆筒型FPSO开展时域运动响应分析。计算结果表明，改进后的圆筒型FPSO在位稳性满足要求；垂荡固有周期增大2.5 s，远离平台与南海百年一遇海况谱峰周期的共振区间；同时，生存海况下FPSO垂荡自由度最大运动幅值下降至2.6 m，可以满足干井采油作业条件。
This paper studies the motion response of cylindrical FPSO under 100 years return sea condition in the South China Sea using three-dimensional potential flow theory. In order to solve the problem of poor heave motion performance, propose to reduce the diameter of the cylinder at the waterline of a platform. Based on JONSWAP wave spectrum to analyze the motion response of the modified cylindrical FPSO in time domain. The analysis shows that the modified cylindrical FPSO meets the requirement of stability. The natural period of platform increases by 2.5 s, away from the peak wave period in the 100-year return sea state. At the same time, the maximal heave motion amplitude of the FPSO under the survivable sea state decreases to 2.6 m, which can satisfy the conditions of the dry-well oil recovery operation.
2024,46(22): 118-123 收稿日期：2024-1-3
DOI：10.3404/j.issn.1672-7649.2024.22.021
分类号：U674.3
基金项目：工信部高技术船舶科研项目（CJ08N20）
作者简介：黄竹(1998-),女,硕士,助理工程师,研究方向为海洋浮式结构物动力特性
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