射弹高速斜入水过程的数值仿真  

Numerical Simulation of High-speed Oblique Water Entry of a Projectile

作　　者：孙士明[1] 颜开[1] 褚学森[1] 王晓辉 SUN Shiming;YAN Kai;CHU Xuesen;WANG Xiaohui(National Key Laboratory on Hydrodynamics,China Ship Scientific Research Center,Wuxi 214082,Jiangsu,China)

机构地区：[1]中国船舶科学研究中心水动力学重点实验室,江苏无锡214082

出　　处：《兵工学报》2020年第S01期122-127,共6页Acta Armamentarii

摘　　要：射弹高速入水过程涉及弹体运动与空泡之间的相互作用,具有强烈非线性。针对超空泡射弹入水过程开展数值仿真研究,采用基于重叠网格的计算流体力学技术建立超空泡射弹入水过程的数值模拟方法,对射弹带不同初始攻角斜入水过程中的受力与运动特性、空泡与流场演化进行分析,获得了初始攻角对弹体运动及其与空泡相互作用的影响规律。结果表明,所得研究成果可为超空泡射弹的设计工作提供技术参考。The high-speed water entry of a projectile involves the interaction between projectile motion and cavity,which is strongly nonlinear.The water entry process of a supercavitating projectile is numerically studied.A numerical simulation method is established by using the overset meshcom-based putational fluid dynamics technology for analyzing the force,motion characterisitics,cavitation and flow field evolution of a supercavitating projectile in the process of water entry.The influence of initial angle of attack on the projectile motion and the interaction between cavity and projectile motion is also analyzed.The results can provide technical reference for the design of supercavitating projectiles.

关 键 词：射弹 超空泡 高速入水 水弹道 计算流体力学 

分 类 号：TJ012.34[兵器科学与技术—兵器发射理论与技术]