基于母型船的船体线型优化设计研究

为满足MARPOL公约新要求,某科考船的后续船型燃油舱需采用双舷侧外板保护,船体宽度较母型船增加。为降低后续船船体宽度增加引起的阻力,利用CFD方法分析母型船船模及宽度增加后的流场、阻力特点,确定降低后续船的兴波阻力为重点优化方向。通过改变球鼻艏参数降低船体兴波阻力,根据多种改型模型的CFD计算结果,确定了较优的球鼻艏参数,有效降低了后续船的阻力。

Research on optimization of a new hull shapebased on parent hull form

To satisfy the new requirments of MARPOL criterion , the new designed scientific survey ship oil tanks should be protected by double shell plating which means the ship width will be added. The parent and new deisigned ship flow field, resistance are researched using CFD method in order to reduce the resistance induced by the added width. The results show the new designed ship wave resistance could be reduced by optimizing the bow line. The hydrodynamic of several improved bow lines are compared and the optimization bow structure is derived.