锥形空化器空化噪声特性仿真研究

摘要

In this paper,the turbo simulation software is used to simulate the head of the conical cavitator with high velocity velocities under the LES turbulence model. With the increase of the flow rate, the cavitation number decreases, The noise level of the cavitation noise is increasing,and the main noise is moving to the low frequency. The angle of attack of the coni-cal cavitator is changed and it is found that the noise spectrum of the cavitation noise increases with the increase of the angle of attack,mobile. The analysis shows that the use of cone-shaped cavitator to complete the ultra-high-speed underwater navigation self-guided navigation,the cavitation angle set should not be too large.%利用Fluent仿真软件,在LES湍流模型下,利用声类比积分法对超高速航行的锥形空化器头部进行仿真计算,随着流速的增大,空化数减小,0°攻角下辐射噪声总声压级在上升,主要噪声向低频移动;改变锥形空化器的攻角,发现随着攻角的增大,辐射噪声功率谱在增大,主要噪声向高频移动.分析表明利用锥形空化器完成超高速水下航行体的自导航行时,空化器攻角设置不宜过大.