超大型双艉鳍集装箱船球艏参数化设计

Parametric Bow Design of Very Large Container Ship with Twin Skeg

集装箱船装载量较大,重心较高,对操纵性的要求较高,采用双艉鳍是一种发展趋势。对于大型集装箱船而言,其方形系数较小,兴波阻力在总阻力中占有较大的份额。针对大型集装箱船的船型特点,建立大型集装箱船球艏的参数化模型,并在不同航速下对其兴波阻力进行数值模拟。计算结果显示,优化球艏的双艉鳍线型的兴波阻力相比原船型有明显的下降,舷侧波形和艉部兴波均有明显的改善,可将该优化方案应用于双艉鳍大型集装箱船的船型设计中。

As container ships have the features of larger loading capacities,higher gravity center and more flexible maneuverability,there is a trend of twin skeg design.The block coefficients of large container ship are small and the wave resistance plays the major role in the total resistance.Therefore,a parametric model of the ship bow is established according to the hull characteristics of large container ships,and the wave resistances of the ship under different speeds are numerically simulated.The result shows that the wave resistance of the optimized bow for the twin skeg lines has decreased significantly compared with that of the original design and both the wave forms along the ship side and the stern wave are well improved.This means that optimized design can be applied to the hull line design of large container ships with twin skeg.