摘要
从结构稳定性的思路出发,研究了圆锥体有攻角绕流对称流态到非对称流态的转变。借助结构稳定性理论,发现小攻角下对称流态是结构稳定的,但大攻角下对称流态是结构不稳定的。文中给出了判定出现结构不稳定的对称流态的数学条件.
Based on the theory of structural stability, this paper investigates the transition of the flows over slenders at angle of attack from symmetric state to the asymmetric state. The conclusion show that the symmetric flow is structural stability at low angle of attack. On the contrary, the symmetric flow is structural unstability at high angle of attack. The critical condition of this transition also be presented in this paper.
出处
《空气动力学学报》
EI
CSCD
北大核心
1997年第1期20-26,共7页
Acta Aerodynamica Sinica
基金
国家自然科学基金
关键词
锥体
绕流
非对称流态
拓扑分析
结构稳定性
flows over slenders
asymmetric flow
topological analysis
structural stability