- Publisher: 航空宇宙技術研究所
航空宇宙技術研究所特別資料:第10回航空機計算空気力学シンポジウム論文集=Special publication of National Aerospace Laboratory: Proceedings of the NAL symposium on aircraft computational aerodynamics
numerical flow simulation | multiple shock system | shock reflection | Mach reflection | shock wave dynamics | shock triple point | shock wave slip line | Mach stem | CFD scheme | computational fluid dynamics scheme | TVD scheme | total variation diminishing scheme | shock capturing scheme | supersonic flow | carbuncle phenomenon | 流れ数値シミュレーション | 多重衝撃波システム | 衝撃波反射 | マッハ反射 | 衝撃波力学 | 衝撃波3重点 | 衝撃波滑り線 | マッハステム | CFDスキーム | 計算流体力学スキーム | TVDスキーム | 全変動減少型スキーム | 衝撃波捕獲スキーム | 超音速流れ | カーバンクル現象
Modern shock capturing schemes, i.e., solution adaptive interpolatory schemes, supply beautiful solutions, so they are used generally even in the industrial world. There happens a problem in such shock capturing schemes, however, when there are plural shocks within the grid points constructing a numerical flux. In order to stabilize a numerical solution in such a scheme, the accuracy must be degenerated. Such a situation can be often seen in two dimensional flow field, and steady Much reflection is a typical example of the plural shock flow. An analytical solution of the steady Much reflection was shown, and an investigation of shock capturing scheme performance by comparing it with present analysis was proposed. In this report, newly developed scheme was also used to investigate the characteristics of the shock capturing schemes, and the performances of TVD (Total Variation Diminishing) scheme and of the new scheme were compared. Carbuncle phenomena and entropy layer on the wall were also discussed.