水下滑翔机水动力性能分析及滑翔姿态优化研究

水下滑翔机是一种新型的无人运载器,具有低阻力、长航程、长续航力特点,其独特的设计显示出了极大的优势。文中采用数值模拟方法计算了不同速度不同攻角情况下水下滑翔机的阻力、升力及对于浮心的俯仰力矩,对其周围流场水动力学性能进行了分析,并通过流场的流动结构研究了受力随滑翔姿态变化的规律。从做功的角度提出了滑翔姿态的优化目标函数,得出水下滑翔机模型高效滑翔姿态角的控制规律。

Hydrodynamic analysis and optimization on the gliding attitude of the underwater glider

The underwater glider is a new kind of autonomous underwater vehicle. It has many advantages such as a low energy cost, and a long endurance, a long operational range with its unique device. In this paper, the lifts, the drags and the moments at the different velocities and the different attack angles are calculated using numerical method. The hydrodynamic performances are analyzed and how the forces change with the gliding attitude is studied according to the flow structure. Guideline to enhance the gliding efficiency is proposed according the transfer efficiency from the consumed work to the available work. Thus, the gliding attitude is optimized.