基于模拟退火算法的FPSO系泊系统数值计算与仿真

Numerical Calculation and Simulation of Mooring System Based on Simulated Annealing Algorithm

浮式生产储油卸油装置(FPSO)系泊系统的优劣对于其工作安全具有重要意义。该文基于模拟退火算法对近浅海的FPSO系泊系统设计进行优化,以平台游动范围、吃水深度和钢桶倾角三者最小为优化目标,运用微元思想对其系泊系统的钢管和锚链在特定环境、系泊参数及平台稳性约束条件下进行静态分析。利用模拟退火算法的可达全局最优的特点,建立平衡方程,计算并仿真了5种不同型号锚链在指定经济作业下的不同最优目标条件的工作状态。计算结果表明,该方法适用于对FPSO在不同环境下安装的系泊系统运行状态进行分析,对其设计和选择具有指导作用,且能提高优化效率和准确性。

The advantages and disadvantages of the mooring system of floating production oil storage and offloading equipment(FPSO)are of great importance for its safety.Based on the simulated annealing algorithm,the design of FPSO mooring system in near shallow water is optimized.The minimum goal is to minimize the three dimensions of platform movement,depth of draught and angle of steel barrel.The static analysis of the mooring system s steel pipe and anchor chain under specific conditions,mooring parameters and platform stability constraints is carried out by using the micro element theory.By using the characteristics of the simulated annealing algorithm,the equilibrium equation is established,and the working conditions of the five different types of anchor chains under the different optimal target conditions under the specified economic operation is calculated and simulated.The calculation results show that the method is suitable for the analysis of the operating state of the mooring system installed in different environments,and has a guiding role in the design and selection of FPSO,and it can improve the efficiency and accuracy of the optimization.