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 Hassan Bagheri and Hassan Ghassemi.Optimization of Wigley Hull Form in order toEnsure the Objective Functions of the Seakeeping Performance[J].Journal of Marine Science and Application,2014,(4):422-429.[doi:10.1007/s11804-014-1275-5]
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Optimization of Wigley Hull Form in order toEnsure the Objective Functions of the Seakeeping Performance


Optimization of Wigley Hull Form in order toEnsure the Objective Functions of the Seakeeping Performance
Hassan Bagheri and Hassan Ghassemi
Hassan Bagheri and Hassan Ghassemi
Department of Ocean Engineering, Amirkabir University of Technology (AUT), Tehran 15875-4413, Iran
optimization genetic algorithm (GA) Wigley hull hull form seakeeping
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, T) 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.


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Last Update: 2014-12-09