不同角度对超空泡射弹入水过程的影响  

Influence of different angles on water entry process ofsupercavitation projectile

作　　者：尹兴超 郝博 代浩 吕超 张力 YIN Xingchao;HAO Bo;DAI Hao;LYU Chao;ZHANG Li(School of Control Engineering,Northeastern University at Qinhuangdao,Qinhuangdao 066004,China;School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学秦皇岛分校控制工程学院,河北秦皇岛066004 [2]东北大学机械工程与自动化学院,沈阳110819

出　　处：《兵器装备工程学报》2023年第10期202-207,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金青年项目(51904069);河北省自然科学基金项目(E2019501085);河北省教育厅青年基金项目(QN2019312);东北大学秦皇岛分校科研启动资金项目(XNY201808)。

摘　　要：基于Fluent软件中的6DOF动网格和重叠网格技术对超空泡射弹不同角度入水进行数值模拟仿真,研究了射弹入水角度对射弹的超空泡特性影响。仿真结果表明:射弹两侧空泡形态不对称,与左侧空泡相比,右侧空泡尺寸较小;射弹入水以后,入水角为15°时,偏航角、滚转角的波动范围更小,相对入水角为5°时,其入水稳定性更好;入水角度对射弹流动稳定阶段的滚转力矩、偏航力矩及俯仰力矩影响非常小,且入水后俯仰力矩处于持续增加状态。Based on the 6DOF dynamic mesh and overlapping mesh technology in Fluent software,the numerical simulation of the projectile entering water at different angles is carried out,and the influence of the projectile entering water angle on the supercavitation characteristics of the projectile is studied.The simulation results show that the morphology of the cavitation on both sides of the projectile is asymmetrical,and the size of the cavitation on the right side is smaller than that on the left side.When the entry angle of projectile is 15°,the fluctuation range of yaw angle and roll angle is smaller.When the relative angle of entry is 5°,its water entry stability is better.The water entry angle has very little influence on the roll moment,yaw moment and pitch moment in the stable phase of projectile flow,and the pitch moment increases continuously after entering the water.

关 键 词：超空泡射弹 数值仿真 角度 空泡 力矩 

分 类 号：O352[理学—流体力学]