Multi-objective hydrodynamic optimization for ONR tumblehome ship
A numerical multi-objective optimization procedure is proposed here to describe the development and application of a practical hydrodynamic optimization tool, OPTShip-SJTU14,15.Three components including hull form modification module,hydrodynamic performance evaluation module and optimization module consist of this tool.In this paper, the free-form deformation (FFD) method are utilized as parametric hull surface modification techniques to generate a series of realistic hull forms subjected to some design constraints during the optimization process.In performance evaluation module, Neumann-Michell (NM) theory is employed here to predict the wave-making drag at low computational cost.Additionally, Kriging models are established based on OLHS samples as surrogates for optimization process, and a multi-objective genetic algorithm named NSGA-Ⅱ has been employed to provide pareto-optimal front.ONR Tumblehome model 5613 is taken as preliminary design, and the two objective functions have been chosen as the wave resistance at two speeds (Fr =0.2, 0.3), Eventually, the pareto optimal set which provides over 4000 optimal hull forms is obtained by using NSGA-Ⅱ algorithm, and three of them are chosen for further analysis.The numerical optimization results are analyzed, and the availability of the OPTShip-SJTU is confirmed by this application.
OPTShip-SJTU Multi objective optimization NSGA-Ⅱ algorithm Neumann-Michell theory wave drag
Jianwei Wu Xiaoyi Liu Decheng Wan
State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China
国际会议
The Second Conference of Global Chinese Scholars on Hydrodynamics(第二届全球华人水动学学术会议)
江苏 无锡
英文
793-799
2016-11-11（万方平台首次上网日期，不代表论文的发表时间）