弹射出筒条件对水下航行体尾部空泡动态演化影响研究
Study on Influence of Tube-Exit Conditions on Dynamic Evolution of Tail Cavity Attached to Underwater Vehicle
曹亮亮 1权晓波 2王勇 1陈香言 1尤天庆1
作者信息
- 1. 北京宇航系统工程研究所,北京 100076
- 2. 中国运载火箭技术研究院,北京 100076
- 折叠
摘要
针对水下航行体尾空泡动态演化过程,该文基于雷诺平均N-S方程结合动网格技术,形成弹射出筒过程多相流数值模拟方法,并通过与已有试验数据对比,验证了该数值计算方法的有效性.在此基础上,研究了筒口压差、发射水深和出筒速度等不同出筒条件对航行体尾空泡内部压力和形态影响规律,基于仿真计算获得不同条件空泡闭合过程以及空泡内部压力振荡峰值和周期认识,结合量纲分析构造了可表征弹射出筒条件影响的无量纲参数,结果显示,在该参数一致条件下,不同工况的尾空泡的压力和形态变化相似性较好.
Abstract
For the dynamic evolution of tail cavity of underwater vehicle,the numerical simulation method of tube-exit multiphase flow is developed based on Reynolds averaged N-S equations combined with dynamic mesh technique.The numerical simulation method is verified by comparing with the experimental results.Based on simulation calculations,the influence of different conditions such as pressure difference of tube-exit,launching depth and tube-exit velocity on the tail cavity pressure and morphology is studied,understanding of the cavity closing process under different conditions and the peak and period of pressure oscillation inside the cavity is obtained,and the dimensionless parameter which can comprehensively characterize the influence of different tube-exit conditions is formed by dimensional analysis.Under the same condition of the dimensionless parameter,the changes of tail cavity pressure and morphology are consistent in different working conditions.
关键词
尾空泡振荡/筒口压差/发射水深/出筒速度Key words
Tail cavity oscillation/Pressure difference of tube-exit/Launching depth/Tube-exit velocity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据