水下滑翔机沿纵剖面滑行时水动力特性计算与分析

Numerical research on dynamic characteristic of underwater glider when it runs in longitudinal section

通过自编软件,采用结构化网格和有限体积法,对水下滑翔机以不同攻角直航时的流场动力学特征进行了数值计算,得到了水下滑翔机在不同攻角时的速度分布和压力分布。分析了升力系数、阻力系数和力矩系数随攻角的变化规律,提出了有效控制滑行姿态的方案;分析了以不同最大攻角滑行时滑行路径和滑行效率,提出了最佳滑行攻角。

The dynamic characteristic of underwater glider is calculated when it runs in longitudinal section at different angle of attack in laminar flow by structured grid and FVM. The distribution regularity of velocity and pressure at different angle of attack is obtained. The method to control the underwater glider effectively when it runs straight is given by analyzing the law of the lift coefficient, drag coefficient and moment coefficent. The best angle of attack is given by analyzing the pathway and the efficiency when the underwater glider runs at different largest angle of attack.