摘要
极地科考破冰船作为一种需进行破冰作业和远距离大洋航行的特殊船型,在设计上需同时考虑静水阻力和冰阻力的影响。采用CAESES软件搭建优化设计平台,通过自由曲面变形方式对影响冰阻力明显的船首区域进行型线变换,采用势流方法和经验公式分别求解船舶受到的静水阻力和冰阻力。将这2种阻力的加权和作为目标函数,结合NSGA-Ⅱ算法对阻力最佳的船体线型进行搜索,实现对船型的快速优化。研究结果表明,采用该优化方案能使船体冰阻力下降5%,而静水阻力几乎没有变化,新船型满足所需的阻力优化要求。
Polar research icebreaker is a special type of ship that needs to break ice and sail in open water with long distance, both the water resistance and ice resistance should be considered in the design. CAESES is used as the optimized design platform, and FFD deformation is used to transform the bow area. The water resistance and ice resistance are solved by potential flow method and empirical methods, respectively. Taking the sum of two kinds of resistance as the objective function, the optimal bow with the best resistance is searched by NSGA-Ⅱ algorithm, the optimization design program can get the optimized hull quickly. The results show that the ice resistance is reduced by 5%, while the water resistance is almost unchanged, and the new hull meets the required resistance requirements.
作者
陈超
刘亚东
何炎平
张伟
郑光耀
CHEN Chao;LIU Yadong;HE Yanping;ZHANG Wei;ZHENG Guangyao(Shanghai Jiao Tong University,State Key Laboratory of Ocean Engineering,Shanghai 200240,China;School of Naval Architecture,Ocean and Civil Engineering,Shanghai 200240,China)
出处
《船舶工程》
CSCD
北大核心
2022年第11期31-35,48,共6页
Ship Engineering
