高速旋转超空泡枪弹水中弹道性能数值模拟  

Numerical Simulation of Underwater Ballstic Performance of High-speed Spinning Projectile

作　　者：李瑞杰 王瑞[1] 徐保成[1] 梁景奇 祁晓斌 王佳雯[1] LI Ruijie;WANG Rui;XU Baocheng;LIANG Jingqi;QI Xiaobin;WANG Jiawen(Northwest Institute of Mechanical&Electrical Engineering,Xianyang 712099,Shaanxi,China)

机构地区：[1]西北机电工程研究所,陕西咸阳712099

出　　处：《兵工学报》2020年第S01期97-103,共7页Acta Armamentarii

基　　金：陕西省自然科学基础研究计划项目(2019JQ-944)。

摘　　要：为维持超空泡射弹的运动稳定性,射弹在发射时带有一定的角速度高速自旋。采用Flunet流场仿真软件,基于流体体积函数多相流模型与6自由度模型,对高速旋转超空泡枪弹进行数值模拟。结合弹丸设计理论与超空泡理论,改进得到简化样弹、简化尾裙弹及锥头样弹,分析其速度特性、空泡特性及弹道特性。研究结果表明:对于截锥形空化器的简化样弹,适当减小空化器尺寸、增大弹质量可以提高有效航程;对于水下航行过程,相对于简化样弹,简化围裙弹空泡形成更快,空泡脉动更弱,转速衰减更小;对于跨介质入水航行过程,相对于简化样弹,锥头样弹存速更大,侧向偏差更小,弹道稳定性更优。In order to maintain the motion stability of supercavitating projectile,the projectile is launched at a certain angular velocity and high-speed spin.The high-speed spinning supercavitation projectile is simulated based on the fluid volume function(VOF)model and six-degrees-of-freedom model.The simplified projectile,the tail skirt projectile and the conical-nosed projectile were designed and optimized based on the projectile design theory and supercavitating projectile design theory,and their speed characteristics,cavitation characteristics and ballistic characteristics were analyzed.The results show that the effective range can be improved by decreasing the cavitation size and increasing the projectile weight for the simplified projectile with cone cavitator.Compared with the simplified projectile,the cavitation formation of the tail skirt projectile is faster,the cavitation pulsation is weaker,and the speed attenuation is smaller in the process of underwater navigation;and the conical-nosed projectile has higher leaving velocity,smaller lateral deviation and better ballistic stability during the cross-medium water-entry navigation.

关 键 词：超空泡枪弹 高速旋转 简化样弹 有效航程 

分 类 号：TJ411.7[兵器科学与技术—火炮、自动武器与弹药工程]