To improve the energy efficiency of ships and to predict ship motion response under actual sea conditions,the far-field theory,strip theory,and Fujii and Takahashi's modified semi-empirical method are based and studied to calculate the wave-induced added resistance.Firstly,a new modified formula based on the Maruo method is presented to calculate the radiation added resistance for the ship with a complex surface.Meanwhile,some calculation details such as the Green function,the shape of the sections(shape below the still water level or shape below the wave level)in the strip theory,and so on are discussed.Finally,the CFD method is used to simulate the motions of the hull and the added resistance,and the results of the CFD method and those of other numerical methods are analyzed and compared with the experiment results.The modified method in the paper can predict the added resistance in waves for the complex-hull-surface ships well and quickly.

WU Qi-ming;ZHANG Bao-ji

Shanghai Maritime University,College of Ocean Science and Engineering,Shanghai 201306,China

中国海洋工程（英文版）

[1]WU Qi-ming;ZHANG Bao-ji-.Calculation Methods of Added Resistance and Ship Motion Response Based on Potential Flow and Viscous Flow Theory)[J].中国海洋工程（英文版）,2022(03):488-499

Fujii,Maruo

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