並列タイトル等Generation of Longitudinal Vortices in Supersonic Flow
タイトル(掲載誌)航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-16
一般注記A key technology for developing scramjet engine is to mix fuel hydrogen and oxygen in supersonic airstream rapidly and efficiently. So far, intensive basic researches have been made to establish the supersonic mixing technology. As a means of enhancing mixing by increasing the contact area of two differen gas species, it is proposed in this paper to generate longitudinal vortices with spanwise periodic cutouts at the trailing edge of the wedge-shaped fuel injector. Furthermore, the wake of a flat plate with the same cutouts is investigated to clarify the formation of the streamwise vortices. 3-dimensional Euler equations are solved for the two cases with Chakravarthy-Osher typed TVD scheme. The computational results in the first case shows that longitudinal vortices are generated a little downstream of the trailing edge, shed into wake, and entrain nearby fluid. This is an evidence of rapid mixing. The second results show flow fields similar to the first, which proves that the generation of longitudinal vortices is mainly governed by the geometry of the cutouts at the trailing edge.
資料番号: NALSP0016019
レポート番号: NAL SP-16
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43515&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ