双管自动迫击炮齐射炮口流场分析  

Analysis on salvo muzzle flow field of twin-barreled automatic mortar

作　　者：袁家绪 王惠源[1] 渠慧娴 于家辉 王童语 YUAN Jiaxu;WANG Huiyuan;QU Huixian;YU Jiahui;WANG Tongyu(College of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学机电工程学院,太原030051

出　　处：《兵器装备工程学报》2024年第4期191-195,共5页Journal of Ordnance Equipment Engineering

摘　　要：为分析双管自动迫击炮齐射时炮口流场对弹丸产生的影响,运用经典内弹道模型对迫击炮发射的膛内平均压力及弹丸速度进行计算,利用三维非定常Euler方程,采用动态分层技术的结构化动网格方法,处理弹丸运动引起的网格变化,建立炮口流场模型,对该双管速射迫击炮发射过程中炮口流场的变化进行数值模拟与分析。研究表明:弹丸出炮口后,火药燃气迅速膨胀,2个流场相互叠加干扰产生局部高压区域,并且相互叠加的流场使弹丸产生的侧向合力,最大侧向力达350.6 N,会对双管自动迫击炮齐射时的射击精度产生影响。In order to analyze the influence of muzzle flow field on the projectile during salvo firing of double-barreled automatic mortar,the average pressure in the bore and projectile velocity of mortar firing were calculated using classical interior ballistic model.The three-dimensional unsteady Euler equation and structured dynamic grid method based on dynamic layering technology were used to deal with the mesh changes caused by projectile motion.The flow field model was established to numerically simulate and analyze the changes of the muzzle flow field during the firing of this twin-barreled rapid-fire mortar.The study shows that after the projectile exits the muzzle,the gunpowder gas expands rapidly,and the two flow fields superimpose on each other to disturb the local high-pressure area,and the superimposed flow fields cause the lateral combined force of the projectile,the maximum lateral force reaches 350.6 N,which will affect the firing accuracy of the twin-barreled automatic mortar when it is fired simultaneously.

关 键 词：齐射 炮口流场 内弹道 后效期 动网格 

分 类 号：TJ012.2[兵器科学与技术—兵器发射理论与技术]