基于混合网格的水下航行器系统航行特性研究

Research on navigation characteristics of underwater vehicle system based on hybrid mesh

水下航行器系统是包含主体、推进系统和其余附体的整体结构,其航行特性研究是水下航行器系统设计的重要内容。为研究水下航行器系统的航行性能和航行时的表面压力特征和流场特性,基于CFD方法,使用重叠网格和滑移网格相结合的混合网格技术对某自主研发水下航行器系统模型进行直接模拟。结果表明:水下航行器系统在不同大小的推力作用下,会表现出不同的航行性能,通过推力-速度曲线可以插值得到不同推力下的航行点;水下航行器在来流速度不同时其所受表面压力大小不同,但分布规律相似,且具有相同的流场分布特性。

The underwater vehicle system is an integral structure including the main body of the underwater vehicle, the propulsion system and the other appendage. In order to research the navigation performance of the underwater vehicle system, the surface pressure characteristics and flow field characteristics when the underwater vehicle system is navigating,based on the CFD method, a hybrid mesh technology combining overlapping mesh and sliding mesh is used to directly simulate a self-developed model of the underwater vehicle system. The results show that the underwater vehicle system has different navigation performance when propulsion system provides different thrusts and the maximum navigation speed under different thrust can be obtained from the thrust-velocity curve. The surface pressure distribution of surface pressure is similar.The water submersible has the same flow field distribution characteristics when underwater vehicle system has different velocity.