斜切角膛口流场的数值模拟  

Numerical Simulation of Flow Field at Oblique Cutting Muzzle

作　　者：刘康[1] 管小荣[1] 徐诚[1] 朱一辉 李芳芮 LIU Kang;GUAN Xiaorong;XU Cheng;ZHU Yihui;LI Fangrui(Nanjing University of Science and Technology School of Mechanical Engineering, Nanjing 210094, China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《兵器装备工程学报》2020年第4期1-5,共5页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(51575279)。

摘　　要：运用动网格技术,对弹丸在不同斜切角度膛口装置下发射时产生的非对称膛口流场进行了数值模拟。展示了非对称膛口流场的发展规律,冲击波、瓶装激波、射流、马赫盘等典型的膛口流场特征随不同斜切角度变化。研究了不同斜切角度膛口装置下的非对称膛口流场的结构对弹丸和膛口产生的影响。The dynamic mesh technique was used to simulate the asymmetric muzzle flow field when the bullet was launched under the muzzle device with different oblique cutting angles.The results show the development law of asymmetric turbulent flow field and the characteristics of typical muzzle flow field such as shock wave,bottle shock,jet and Mach disk varying with different chamfer angles.The influence of the structure of asymmetric flow field on the projectile and the muzzle under the muzzle device with different oblique cutting angles is studied.

关 键 词：非对称流场 膛口装置 数值仿真 动网格 激波压力 

分 类 号：TJ012.2[兵器科学与技术—兵器发射理论与技术]