Added Resistance Acting on Hull of a Non Ballast Water Ship

查看全文 作　　者：Ngo Van [1,2]He;Yoshiho [1]Ikeda

机构地区：[1]Marine System Engineering, Osaka Prefecture University;[2]Department of Ship Engineering and Fluid Mechanics, Hanoi University of Science and Technology

出　　处：《Journal of Marine Science and Application》索引2014年第13卷第1期,共12页

摘　　要：In this paper, added resistances acting on a hull of non ballast water ship(NBS) in high waves is discussed. The non ballast water ships were developed at the laboratory of the authors at Osaka Prefecture University, Japan. In the present paper, the performances of three kinds of bow shapes developed for the NBS were theoretically and experimentally investigated to find the best one in high waves. In previous papers, an optimum bow shape for the NBS was developed in calm water and in moderated waves. For a 2 m model for experiments and computations, the wave height is 0.02 m. This means that the wave height is 15% of the draft of the ship in full load conditions. In this paper, added resistances in high waves up to 0.07 m for a 2 m model or 53% of the full load draft are investigated. In such high waves linear wave theories which have been used in the design stage of a ship for a long time may not work well anymore, and experiments are the only effective tool to predict the added resistance in high waves. With the computations for waves, the ship is in a fully captured condition because shorter waves, λ/Lpp<0.6, are assumed. 关键词：KEYWORDS added resistance non BALLAST water ship, HULL optimumbow SHAPE

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Added Resistance Acting on Hull of a Non Ballast Water Ship

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