高速三维边界层的横流不稳定性

用两点四阶差分格式研究旋转圆锥超音速三维边界层的横流不稳定性和壁面冷却对稳定性的影响数值结果表明，与二维边界层相比横流使三维边界层第一模式增长率增大，对第二模式影响很小；Ｍｅ＜４３第一模式最不稳定，Ｍｅ＞４３第二模式最不稳定；三维边界层最不稳定第二模式是三维波，二维边界层则为二维波；壁面冷却对第一模式起稳定作用，对第二模式起不稳定作用

CROSSFLOW INSTABILITY OF HIGH SPEED THREE DIMENSIONAL BOUNDARY LAYER 1)

There exist variety of instability in three dimensional boundary layer on swept wing, the cross-flow instability is dominant The flow over rotating cone is typical three dimensional boundary layer It has been shown that the experimental and theoretical results of rotating cone can be used to model cross flow instability of swept wing At high speeds, where even the basic flow calculations of swept wing are a problem, owe to it′s simple geometry, rotating cone become a suitable and valuable model to ...