发射速度对航行体出水姿态影响数值仿真研究

Research on Gesture of Underwater Vehicle Exiting from Different Velocity by Numerical Simulation Method

水下航行体的出水过程是一个穿越不同介质面,运动速度等参数剧烈变化的非定常、非线性气液两相运动的过程。在此过程中由于发射速度的改变,将引起航行体流体动力及运动载荷的变化,从而影响水下航行体的出水姿态和空中飞行运动的稳定性。为了研究发射速度对航行体出水姿态的影响,基于CFD数值方法,在考虑自然空化条件下,对航行体水下及出水运动进行数值仿真,得到航行体出水姿态数据,在此基础上,对相同发射深度下,不同发射速度航行体出水运动过程进行数值仿真,得出发射速度变化对航行体出水姿态影响,其研究结论为水下航行体出筒速度选择提供了理论参考。

The underwater vehicle exiting from wave is an unsteady and non-linear moving process. It contains passing through the different material face and the motion parameters dramatic changed. The fluid dynamics and exercise loading dramatic changed can impact the gesture of underwater vehicle exiting from wave and moving in the air, as a result of the launched in vary velocity. Direct at these problem, this paper based on the cavitation model makes use of dynamic mesh technique to simulate the gesture of underwater vehicle exiting from wave, gets the influence by the changed of the launched velocity particularly, The research conclusion can make reference to the parameter design for the trajectory of underwater vehicle.