摘要
对装有炮口制退器的车载炮膛口冲击流场进行数值模拟,得出高低角为17°,方向角为0°情况下膛口及车身上流场复杂波系结构.根据计算结果分析了膛口和车身上冲击波的发展规律.在火炮发射过程中车身最大压力值为169.573 3 kPa.结合流场模拟结果计算了炮口制退器效率,得到制退器效率为35.008%.数值模拟结果为计算车身在冲击波作用下的动态响应提供了先决条件,为火炮的结构设计提供了参考.
Numerical simulation was performed on muzzle blast flow of vehicle-mounted howitzer with muzzle brake. While howitzer fired under the conditions of an altitude angle of 17°and direction angle of 0°, complex wave structure of muzzle blast flow was obtained. Development rule of shock wave of muzzle and vehicle body was drawn by simulation results. The maximum pressure on vehicle body is 169. 573 3 kPa. Efficiency of muzzle brake was calculated based on numerical simulation results. Energy efficiency of the muzzle brake is 35. 008%. The simulation forms precondition of calculating impact response analysis of vehicle-mounted howitzer under effect of shock wave and provide reference for structure design of gun.
出处
《弹道学报》
CSCD
北大核心
2006年第3期55-57,共3页
Journal of Ballistics
关键词
流体力学
炮口制退器
数值模拟
冲击波
fluid mechanics
muzzle brake
numerical simulation
shock wave
