並列タイトル等Mechanism of the Vortex Pairing in a Parabolic Plane Jet
タイトル（掲載誌）独立行政法人航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-59
一般注記Three dimensional deformation and pairing process of vortex tubes were investigated in a two-dimensional parabolic jet exhausted from a nozzle of 1Omm × 400mm. Hot-wire measurement and multi-smokewire visualization were compared. Vortex pairing occurred periodically around X/2h≒7 when the bimodal excitation conducted at us/uf=1, Φ=0 deg, where uf and us were fundamental and subharmonic components, respectively, and Φ was the phase deference between uf and us. Vortex arrangement shifted into anti-symmetric one after the pairing. At Φ=120°, the vortex pairing became to occur occasionally. When two vortices didn't paired, the symmetric arrangement was kept until far downstream. Rib structures elongated from the roll vortices were important role as the interaction between the roll vortices.
資料番号: NALSP0059006
レポート番号: NAL SP-59
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43578&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