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Citation:
　Ngo Van He and Yoshiho Ikeda.Added Resistance Acting on Hull of a Non Ballast Water Ship[J].Journal of Marine Science and Application,2014,(1):11-22.[doi:10.1007/s11804-014-1225-2]
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Added Resistance Acting on Hull of a Non Ballast Water Ship

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Title:
Added Resistance Acting on Hull of a Non Ballast Water Ship
Author(s):
Ngo Van He and Yoshiho Ikeda
Affilations:
Author(s):
Ngo Van He and Yoshiho Ikeda
1. Marine System Engineering, Osaka Prefecture University, Osaka 599-8531, Japan 2. Department of Ship Engineering and Fluid Mechanics, Hanoi University of Science and Technology, Hanoi 10000, Vietnam
Keywords:
added resistance;  non ballast water ship;  hull;  optimum bow shape
分类号:
-
DOI:
10.1007/s11804-014-1225-2
Abstract:
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.

References:

He NV, Nihei Y, Ikeda Y (2011). A study on application of a commercial cfd code to reduce resistance acting on a non ballast tanker - Part 1. The Japan Society of Naval Architects and Ocean Engineers, Kobe, 415-418.
He NV, Nihei Y, Ikeda Y (2012). A Study on application of a commercial CFD code to reduce resistance acting on a non ballast tanker – Part 2. The 6th Asia-Pacific Workshop on Marine Hydrodynamic, Johor, 264-269.
He NV, Ikeda Y (2013). Optimization of bow shape for a non ballast water. Journal of Marine Science and Application, 12(3), 251-260.
Tatsumi T, Nihei Y, Ikeda Y (2010). Development of a new energy saving tanker with non ballast water and podded propulsor. The 5th Asia-Pacific Workshop on Marine Hydrodynamic, Osaka, 25-28.
Tatsumi T, Nihei Y, Ikeda Y (2011). Development of a new energy saving tanker with non ballast water - Part 1. The Japan Society of Naval Architects and Ocean Engineers, Fukuoka, 216-218. (in Japanese)
Tomita A, Nihei Y, Ikeda Y (2011). Development of a new energy saving tanker with non ballast water - Part 2. The Japan Society of Naval Architects and Ocean Engineers, Fukuoka, 219-222. (in Japanese)

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Last Update: 2014-11-04