本文应用一种基于控制点阵的曲面形状控制算法改变球鼻艏的几何变形，通过增加点阵的数量，以改善球鼻艏与船体过渡的几何光顺性，运用多岛遗传算法数值设计兴波阻力最小的球鼻艏形状。针对KCS船舶，对3个不同点阵数量开展了球鼻艏形状优化设计，结果表明，增加点阵数量能有效地提高球鼻艏与船体过渡的几何光顺性，同时也保证了减阻效果，最优方案兴波阻力的相对值减少了11.8%，而且球鼻艏的体积和湿表面积都有明显的下降。
A curved surface shape control algorithm based on the control lattice is used to modify the geometry of the bulbous bow in this paper. Effects of increasing the number of lattices, which is used to improve the geometrical smoothness from ship hull to the bulbous bow, are investigated. The bulbous bow is optimized for lowest wave resistance. A practice for optimization of the bulbous bow for KCS is carried out with respect to three different lattice numbers. The results show that increasing the number of lattices can not only effectively improve the geometric smoothness, but reduce wave-making resistance substantially. The optimal solution reduces the wave-making resistance by 11.8% relative to the original one. In addition, volume and wetted surface of the optimal bulbous bow are much smaller than the original one.
2022,44(2): 12-17 收稿日期：2020-12-15
DOI：10.3404/j.issn.1672-7649.2022.02.003
分类号：U661.32
基金项目：财政部、教育部重大科研专项资助项目（KSHIP，GKZY010004）
作者简介：房体超(1995-)，男，硕士研究生，研究方向为船型优化
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