著者

柏木 正 杉本 健 上田 武志 山崎 啓市 東濱 清 木村 校優 山下 力蔵 伊東 章雄 溝上 宗二

出版者

公益社団法人日本船舶海洋工学会

雑誌

関西造船協会論文集 (ISSN:13467727)

巻号頁・発行日

no.241, pp.67-82, 2004-03-25

被引用文献数

4

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A prediction and analysis system for the performance of a ship in real seas is proposed and constructed, with EUT (Enhanced Unified Theory) adopted as the main calculation method. The proposed system can compute the frequency-domain response functions of the wave-induced ship motions, the distribution of the pressure and global wave loads, the relative wave height, and etc. In addition, the added resistance, wave-induced steady lateral force and yaw moment can be predicted, including effects of the bow wave diffraction, the forward speed and 3-D interactions in a rational manner. By using these results and a wave spectrum representing real irregular seas, the short-term prediction of linear responses, the averaged added resistance, and the resultant speed loss of a ship in irregular waves can be calculated with the present system. Good performance of the system is demonstrated with some comparisons to experimental results and some applications to the speed correction in the speed trial and the prediction of the speed loss in actual voyages.