超声速高超声速球锥绕流的边界层稳定性特点初探

Stability Characteristics of the Boundary Layer of an Axisymmetric Blunt Nosed Cone in the Supersonic and Hypersonic Flow

本文对一个球锥组合体，在超声速来流及零迎角条件下，对其边界层的稳定性特点进行了分析并讨论了转捩预测问题。结果表明转捩总是最先出现在来流马赫数不太大，或来流雷诺数较高并且具有较大的周向速度或周向波数的情况下。

The stability characteristics of the boundary layer of an axisymmetric blunt nosed cone in the supersonic and hypersonic flow has been studied.The cone has zero angle of attack.The problem of the prediction of transition is discussed.The results show that the transition more likely happen under the situations with high azimuthal wave number and speed,and at a relatively low mach number and high Reynolds number.