Optimization of Wigley Hull Form in order to Ensure the Objective Functions of the Seakeeping Performance  

作　　者：Hassan Bagheri Hassan Ghassemi 

机构地区：[1]Department of Ocean Engineering, Amirkabir University of Technology (A UT), Tehran 15875-4413, Iran

出　　处：《Journal of Marine Science and Application》2014年第4期422-429,共8页船舶与海洋工程学报（英文版）

基　　金：marine research institute (MRC) of AUT for some financial support of this project

摘　　要：The research performed in this paper was carried out to investigate the computational procedure to design seakeeping optimized ship hull form. To reach the optimized hull form, four stages should be done, which consists of： generate alternative hull form, seakeeping calculations, objective functions and optimization techniques. There are many parameters that may be determined in ship hull form optimization. This paper deals with developed strip theory for determining the seakeeping performance, genetic algorithm （GA） as optimization method, high order equations for curve fitting of the hull form and finally reaching to the minimum bow vertical motion in regular head waves. The Wigley hull is selected as an initial hull and carried to be optimized. Two cases are considered. For the first case, the only form coefficients of the hull （CB, CM, Cw, Cp） are changed and main dimensions （L, B, 7） are fixed. In the second case both hull form and main dimensions are varied simultaneously. Finally, optimized hull form and its seakeeping performances are presented. The results of optimization procedure demonstrate that the optimized hull forms yield a reduction in vertical motion and acceleration.

关 键 词：OPTIMIZATION genetic algorithm （GA） Wigley hull hullform SEAKEEPING 

分 类 号：O242.23[理学—计算数学] U661.32[理学—数学]