基于径向基函数的双体风电运维船型线和片体间距优化

针对海上风电运维船快速性和低能耗的需求,利用径向基函数插值方法进行船体曲面重构,结合计算流体力学计算工具和遗传算法,以兴波阻力最小化为目标,在设计空间中探索兴波阻力最优的船型,开展双体风电运维船的型线及片体间距优化研究。以某双体风电运维船为研究对象,分别得到其在20 kn和30 kn航速的最优型线,与原始船型相比,阻力得到一定程度的优化。基于阻力性能分析方法,选取不同的运维船片体间距比,优化选取片体间距,使兴波干扰处于有利条件,得到20 kn航速下片体间距比取值范围为2.5~3.5。所作优化有效减小双体风电运维船的兴波阻力,为船体型线设计提供一定的参考。

Optimization of Profile and Side-Hull Spacing of Wind Turbine Operation and Maintenance Catamaran Based on Radial Basis Function

In response to the requirements of the rapid and low energy consumption of offshore wind power operation and maintenance ships, the radial basis function interpolation method is used to reconstruct the hull surface. Combined with the calculation tools of computational fluid dynamics and genetic algorithms, with the goal of minimizing wave making resistance, the optimal ship type for wave making resistance is explored, and the optimization of the profile and side-hull spacing of the wind turbine operation and maintenance catamaran is conducted. Taken a wind turbine operation and maintenance catamaran as the research object, the optimal profiles at the speeds of 20 kn and 30 kn are obtained respectively, and the resistance is optimized to certain extent compared with that of the original ship. Based on the method of resistance performance analysis, by selecting different ratios of the distance between the plates, the most suitable distance between the plates is selected, so that the wave-making interference is in favorable conditions. It is obtained that the recommended range of the ratios of the distance between the plates is 2.5~3.5 at the speed of 20 kn. The wave-making resistance of the wind turbine operation and maintenance catamaran is effectively reduced by the proposed optimization method, which provides certain reference for the hull profile design.