外挂物投放/发射过程数值仿真中的非均匀流场计算  

The Calculation for Nonuniform Flow Field in the Process of Determing the Trajectory of Ejection or Release External Stores

作　　者：周奋为 张启南[2] 

机构地区：[1]沈阳飞机研究所,辽宁沈阳110035 [2]北京航空航天大学,北京100083

出　　处：《空气动力学学报》1992年第4期506-512,共7页Acta Aerodynamica Sinica

摘　　要：本文介绍了用面元法计算外挂物投放/发射过程中的非均匀流场问题。理论分析表明三角形奇点分布形态在非均匀流场计算中具有其独特的优越性。本文还阐述了伍德沃德程序中机翼线性变化源分布中法向扰动速度公式的错误。数值结果表明,理论计算与实验值吻合较好。This paper has presented the problem which deals with the prediction of nonuniform flow field in the process of determing the trajectory of ejection or release external stores using panel method. Theoritical analysis has shown that triangular singularity distribution has special advantages over the other ones(vortex ring or constant distribution) in the prediction of nonuniform flow field. It has been also pointed out in this paper that the wing source velocity formula has error in woodward's USSAERO code. The estimated flow field data agree well with the measured ones.

关 键 词：飞机外挂物 非均匀流动 面元法 

分 类 号：V212.11[航空宇航科学与技术—航空宇航推进理论与工程]