倾斜发射导弹燃气流场数值模拟

Numerical Simulation of Jet Flow for Incline-launched Missile

为了研究倾斜发射过程中导弹头部下沉对燃气流场分布的影响,文中在进行导弹受力分析的基础上,将导弹运动过程分为两个阶段,分别应用域动分层法和局部网格重构两种动网格更新方法,对导弹发射过程的燃气流场进行数值模拟,得到燃气流场压力和温度分布及其变化规律。研究结果表明,导弹由于重力作用产生偏转,使得导弹上表面气流温度高于下表面。

To study the effect of deflection on distribution of jet flow during inclined launching process, based on force analysis of missile, the launching stage was divided into two parts, and dynamic mesh update method was used. The method is used for numerical simulation of the missile launching, pressure and temperature distribution are obtained. The results show that deflection occurs on missile by gravity, making the temperature of upper surface higher than lower surface.