A simple alternative approach to assess the effect of the above-water bow form on the ship added resistance

Ming-Chung Fang, Zi Yi Lee, Kao Tuao Huang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In the paper, a simple alternative approach to assess the effect of the above-water bow form on the added resistance for the ship advancing in longitudinal waves is investigated. The strip theory and source distribution method are applied to solve the corresponding boundary conditions and analyze nonlinear motions and mean added resistance. In order to calculate the instantaneous ship motions and nonlinear forces with respect to the different draft, the time domain simulation technique based on the 4th Runge-Kutta method is applied here, and the instantaneous mean added resistance for a ship with different bow flare can be further obtained. The total quasi-mean added resistance is then defined to assess the virtual effect of the above-water bow flare shape. The present results show that the larger the bow flare, the larger the added resistance. The effect of wave profile along the ship length on the added resistance is also deeply investigated for discussions in the study.

Original languageEnglish
Pages (from-to)34-48
Number of pages15
JournalOcean Engineering
Volume57
DOIs
Publication statusPublished - 2013 Jan 1

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Drag
Ships
Water
Runge Kutta methods
Boundary conditions

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Ocean Engineering

Cite this

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abstract = "In the paper, a simple alternative approach to assess the effect of the above-water bow form on the added resistance for the ship advancing in longitudinal waves is investigated. The strip theory and source distribution method are applied to solve the corresponding boundary conditions and analyze nonlinear motions and mean added resistance. In order to calculate the instantaneous ship motions and nonlinear forces with respect to the different draft, the time domain simulation technique based on the 4th Runge-Kutta method is applied here, and the instantaneous mean added resistance for a ship with different bow flare can be further obtained. The total quasi-mean added resistance is then defined to assess the virtual effect of the above-water bow flare shape. The present results show that the larger the bow flare, the larger the added resistance. The effect of wave profile along the ship length on the added resistance is also deeply investigated for discussions in the study.",
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A simple alternative approach to assess the effect of the above-water bow form on the ship added resistance. / Fang, Ming-Chung; Lee, Zi Yi; Huang, Kao Tuao.

In: Ocean Engineering, Vol. 57, 01.01.2013, p. 34-48.

Research output: Contribution to journalArticle

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