| タイトル | PNS predictions of axisymmetric hypersonic blunt-body and afterbody flowfields |
| 著者（英） | Lewis, Clark H.; Bhutta, Bilal A. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1993-07-01 |
| 言語 | eng |
| 内容記述 | A new space-marching full-body PNS algorithm capable of treating the complete blunt-body and afterbody flowfields over typical wide-bodied configurations is developed and demonstrated. A hybrid differencing scheme involving Flux-Vector Splitting (FVS) across embedded shocks and flowfield discontinuities, and central differencing in smooth (shock-free) regions is used. It is demonstrated that this new full-body PNS scheme can be marched from the spherical stagnation point over the entire body using bow-shock capturing, and provides an efficient and effective way for predicting blunt-body flowfields for various reentry application. The Mach 20 flow over a 30-deg sphere cone is predicted and comparisons are made with an existing VSL scheme for the blunt-body region and an existing PNS scheme for the conical afterbody region. The predicted flowfield and surface-measurable quantities are in excellent agreement, and demonstrate the accuracy and efficiency of the new full-body PNS scheme. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 93A46479
AIAA PAPER 93-2725 |
| 権利 | Copyright |
|
