外挂物投放问题的二维非结构动态网格技术研究

以动态网格守恒型方程为控制方程,在二维非结构网格基础上发展了弹簧式光顺法和局部网格重构法两种动态网格变形技术。结合运动轨迹计算方程,将动态网格法应用于飞机外挂物投放问题中,成功模拟了导弹自由投放的整个过程,获得了详细的包括弹体运动速度、运动轨迹和受力情况等在内的丰富的流场信息。成功的应用不仅验证了动态网格法的可行性;而且也表明,动态网格法的进一步完善与发展将成为解决外挂物投放问题的有力工具。

2D unstructured dynamic mesh research on store separation

Spring-based smoothing method and local remeshing method technique are developed based on 2D unstructured mesh and dynamic mesh conservation equations.This method is applied to store separation problems combined with solid-body trajectory kinematics equation.A successful missile free separation procedure is described and abundant flow information is achieved including motion trajectory and loads on the body.This application shows the validity of dynamic method and combining with wind tunnel test,it would be a powerful tool to resolve the store separation problems.