摘要
针对新型多管火炮发射产生的膛口流场与冲击波进行了数值模拟计算.建立了膛口流场数学物理模型,采用三维Navier-Stokes方程及Spalart-Allmaras模型,并采用Roe格式的差分方法.计算得到了多管火炮膛口流场的结构和流动参数.由计算结果可知,多管火炮发射时各身管产生的膛口流场会相互影响和叠加,形成的流场中激波系更为复杂,气流对弹丸产生的非对称作用对弹丸飞行姿态的影响也更为显著.计算结果可为多管发射武器系统结构设计与射击精度预测提供必要的参考.
To numerical simulation of the novel multi-barrel artillery fired to produce a muzzle flow field and shock wave,the mathematical model was established,and three-dimensional Navier-Stokes equation and Spalart-Allmaras Model and the Roe format of TVD were used.The result of the simulation indicated muzzle flow field structure and flow parameters of the multi-barrel artillery system.According to the results,when multi-barrel artillery fired,the barrel muzzle flow fields interact and superpose,the shock wave system of the flow field is more complex and the muzzle flow field has observable influence on the attitude of the bullets moving.The results can provide the multi-barrel firing weapon system structure design and firing accuracy of prediction the necessary reference.
出处
《中北大学学报（自然科学版）》
CAS
北大核心
2012年第6期659-662,共4页
Journal of North University of China(Natural Science Edition)
基金
中北大学科学基金资助项目
关键词
多管火炮
并联发射
膛口射流
数值模拟
multi-barrel gun
parallel launch
muzzle jet
numerical simulation
