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1 Polish Maritime Research

1 2012

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Research on a method of hull form design based on wave-making resistance optimization

Jianglong Sun Jianglong, Xujian Lv Xujian, Weibin Liu Weibin, Hanwen Ning Hanwen, Xianwen Chen Xianwen

Polish Maritime Research

2012

nr 3

16-25

In this paper, we consider an optimization of the hull shape in order to minimize the total resistance of a ship. The total resistance is assumed to be the sum of the wave resistance computed on the basis of the thin-ship theory and the frictional resistance. Smoothness of hull lines is proved with mathematical procedure, in which differentials of the hull lines functions are analyzed. The wave-making resistance optimization, involving a genetic algorithm, uses Michell integral to calculate wave resistance. A certain hull form is generated by the method using cross section information of a modified DTMB model ship 5415 and a comparative experiment is carried out. Experimental and calculation result show that the method is of good adaptability for designing certain types of ships with excellent resistance performance.