| タイトル | Effect of nose bluntness on boundary layer stability and transition |
| 著者（英） | Spall, R. E.; Chang, C.-L.; Malik, M. R. |
| 著者所属（英） | High Technology Corp. |
| 発行日 | 1990-01-01 |
| 言語 | eng |
| 内容記述 | The effect of nose bluntness on boundary layer instability is studied theoretically for a Mach 8 flow past a 7 degree semivertex cone. The basic flow is computed by solving the parabolized Navier-Stokes equations. Linear stability analysis of the basic flow reveals that, with small amount of bluntness, the critical Reynolds number for the onset of instability increases by an order of magnitude compared to the sharp cone value. The computed second mode frequencies are also in reasonable agreement with the experimental results. The results are used to explain the effect of unit Reynolds number on transition present in the quiet aeroballistic range data. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 90A22170
AIAA PAPER 90-0112 |
| 権利 | Copyright |
|
