大尺度航行体跨介质入水弹道特性数值模拟研究  

Numerical simulation on cross medium water-entry trajectory characteristics of large-scale vehicle

作　　者：王佳雯[1] 祁晓斌 王瑞[1] 袁绪龙[2] Wang Jiawen;Qi Xiaobin;Wang Rui;Yuan Xulong(Northwest Institute of Mechanical and Electrical Engineering,Xianyang 712099,China;School of Marine Science and Technology,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西北机电工程研究所,咸阳712099 [2]西北工业大学航海学院,西安710072

出　　处：《战术导弹技术》2023年第3期164-172,共9页Tactical Missile Technology

基　　金：国家重点实验室基金项目(6142604190401)。

摘　　要：为研究大尺度航行体跨介质弹道特性,应用刚体动力学理论构建了航行体三自由度运动模型,结合动网格技术建立了耦合求解流场和航行体运动的非定常数值仿真模型,对纵平面内超空泡航行体垂向大深度航行过程进行数值模拟。结果表明:深水压强的作用下,通气超空泡航行体的空泡体积受到显著压缩,空泡的轴向尺度和径向尺度减小;超空泡航行体肩部持续沾湿不利于航行体稳定,直至形成尾拍运动;随着航行水深增加,航行体俯仰角速度和角度呈周期性变化,其幅值和频率增大,航行体流体动力呈现剧烈振荡特性,脉动频率和幅值急剧增加。In order to study the cross medium ballistic characteristics of large-scale vehicles,a threedegree of freedom motion model is constructed by using the theory of rigid body dynamics.Combined with the dynamic mesh technology,an unsteady numerical simulation model for coupling the flow field and the motion of the vehicle is established to simulate the deep-water motion of the supercavitating vehicle in the longitudinal plane.The results show that under the action of deep-water pressure,the cavitation volume of ventilated supercavitating vehicle is significantly compressed,and the axial and radial dimensions of cavitation are reduced.The continuous wetting of the shoulder of the supercavitating vehicle is not conducive to the stability of the vehicle until the tail beat movement is formed.With the increase of navigation depth,the pitch and elevation velocity and angle of the vehicle change periodically,and its amplitude and frequency increase.The hydrodynamic force of the vehicle presents violent oscillation characteristics,and the pulsation frequency and amplitude increase sharply.

关 键 词：超空泡航行体 通气超空泡 自然超空泡 深水运动 流体动力特性 弹道特性 

分 类 号：TG67[金属学及工艺—金属切削加工及机床]