基于Fluent的碟形水下机器人黏性流场阻力分析

Analysis on Viscous Flow Resistance of the Dish-shaped Underwater Vehicle Based on Fluent

在水下机器人领域,水动力一直作为研究重点,其中机器人水下运动过程中黏性流场阻力分析尤为关键。文中以碟形四旋翼水下机器人作为研究对象,分析其在自由起降及精确着底运动过程中所受黏性流场阻力变化规律。首先对碟形四旋翼水下机器人进行运动方程建模,采用计算流体力学CFD方法,利用Fluent软件对其在黏性流场内运动进行多组仿真实验。实验结果证明该机器人运动速度与黏性流场阻力关系符合运动规律,对后续机器人结构优化及样机开发具有重要指导意义。

In the field of underwater vehicle,hydrodynamics has always been the focus of research,especially the analysis of viscous flow resistance during the underwater motion of the vehicle.This paper takes a quad-rotor dish-shaped underwater vehicle as the research object,and analyzes the variation trend of viscous flow resistance during its free take-off and precise landing.Firstly,model the motion equation of the dish-shaped four-rotor underwater robot.The computational fluid dynamics CFD method is adopted,and the Fluent software is used to conduct multiple sets of simulation experiments on its motion in the viscous flow field.The experimental results prove that the relationship between the robot's speed and the resistance of the viscous flow field conforms to the law of motion,which has important guiding significance for subsequent robot structure optimization and prototype development.