超音速子母弹分离激波干扰特性研究  

Research on Shock/Shock Wave Disturbance Characteristics in Separation of Supersonic Cluster Munition

作　　者：陶如意[1] 王浩[1] 赵润祥[1] 江坤[1] 

机构地区：[1]南京理工大学能源与动力工程学院,江苏南京210094

出　　处：《兵工学报》2011年第10期1206-1211,共6页Acta Armamentarii

摘　　要：超音速子母弹分离伴随着复杂的激波干扰,采用数值方法对超音速子母弹分离流场中激波与激波干扰特性进行了研究,数值计算结果与实验研究结果符合较好,表明利用AUSM+格式求解采用k-ωSST湍流模型的雷诺平均Navier-Stokes方程,能较好地模拟超音速子母弹分离激波干扰。子母弹分离过程中不仅存在激波与激波碰撞、部分激波发生多次反射,而且由于干扰使气流方向发生变化,并形成变化复杂的压力、速度分布区域。通过对特定分离状态干扰流场结构的分析,探讨了子母弹分离激波干扰特性及其形成机理。There is complex shock disturbance in the process of separation of supersonic cluster munition. A novel numerical simulation method was proposed to research the shock/shock wave disturbance charac- teristics in separated flow field of supersonic cluster munition. The calculated solutions are well consistent with the experimental data. It is shown that the shock/shock flow characteristics can be simulated well by the method of Reynolds-averaged Navier-Stokes equations, and splitting scheme AUSM ＋. The shock/ shock interaction, the multiple reflections generated by shocks, and the complicated distribution of pressure and velocity caused by the change in flow direction are found in the process of dispersion. The flow field mechanism of shock/shock flow was explored by the analysis of the specific flow field structure.

关 键 词：流体力学 子母弹 激波与激波干扰 数值模拟 AUSM+ 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程] V211.7