| タイトル | An improved PNS scheme for predicting complex three-dimensional hypersonic flows |
| 著者（英） | Bhutta, Bilal A.; Lewis, Clark H. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1992-01-01 |
| 言語 | eng |
| 内容記述 | Upwinding is incorporated into a numerical technique for predicting hypersonic viscous flows over lifting configurations at moderate angles of attack. A general real-gas flux-vector-splitting technique based on Van Leer's (1982) approach is employed to model upwinding, and three techniques are examined for flux-vector differencing. The three methods are evaluated by applying them to an axisymmetric configuration with a 10-deg afterbody flare. The results indicate that an oscillation-free shock front can be described by using first-order full upwinding across the embedded shock and central-differencing for the other zones. This combined approach is found to be highly convergent for the near-wall region, and its performance is examined for predicting a Mach 15 flow over a finned missile. Attention is given to the effects of gas chemistry which can significantly affect the flows over the missile configurations. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 92A31679
AIAA PAPER 92-0753 |
| 権利 | Copyright |
