细长锥体有攻角绕流对称流态到非对称流态的结构稳定性研究

On the Structural Stability of the Flows over Slenders at Angle of Attack

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.