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

机译：一种简单的替代方法，可以评估水上船首形态对船上附加阻力的影响

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摘要

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.
机译：在本文中，研究了一种简单的替代方法来评估水上船首形态对纵波前进船舶的附加阻力的影响。应用带状理论和源分布方法求解相应的边界条件，分析非线性运动和平均附加阻力。为了计算不同吃水深度下的船舶瞬时运动和非线性力，本文采用基于第四次Runge-Kutta方法的时域仿真技术，可以计算出不同船首耀斑的船舶的瞬时平均附加阻力。进一步获得。然后定义“总准均值增加的阻力”以评估水上弓形喇叭形形状的虚拟效果。目前的结果表明，弓形耀斑越大，附加阻力越大。还将深入研究沿船长的波浪剖面对附加阻力的影响，以供研究中讨论。

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