摘要
运用Euler方程和六自由度动力学方程数值模拟了外挂物投放的气动特性与运行姿态和轨迹。为了模拟外挂物从飞行器分离后的绕流特性和相对运动,采用了动态嵌套网格技术,并发展了一种洞边界建立和外边点的插值单元搜寻蛇行法,提高了计算效率。通过算例,证明了本文方法的有效性和合理性。
The moving Chimera grid technique is developed to simulate running trajectories of stores separated from aircraft. Because the position of every grid, the artificial boundaries and the interpolation cells for boundary points are changed from one time step to next time step, it is necessary to use snaking-like method in the moving Chimera grid technique to improve the efficiency of building artificial boundaries and searching interpolation cells for boundary points. The running trajectories of stores separated from aircraft are computed using the moving Chimera grid, Euler equations and six degrees of freedom dynamic equations, and the results obtained are reasonable.
出处
《空气动力学学报》
CSCD
北大核心
2004年第1期114-117,共4页
Acta Aerodynamica Sinica
基金
上海市高等学校科学技术发展基金资助
上海市重点建设学科项目资助.
