二次元噴流中に存在する渦構造の合体機構

Material type: 文書・図像類

Author: 関下, 信正ほか

Publisher: 航空宇宙技術研究所

Publication date: 2003-06

Material Format: Digital

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Note (General)：: Three dimensional deformation and pairing process of vortex tubes were investigated in a two-dimensional parabolic jet exhausted from a nozzle of 1Omm...

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Material Type: 文書・図像類
Title: 二次元噴流中に存在する渦構造の合体機構
Author/Editor: 関下, 信正
蒔田, 秀治
Sekishita, N.
Makita, H.
Author Heading: 関下, 信正
蒔田, 秀治
Sekishita, N.
Makita, H.
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 2003-06
Publication Date (W3CDTF): 2003-06
Alternative Title: Mechanism of the Vortex Pairing in a Parabolic Plane Jet
Periodical title: 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
No. or year of volume/issue: 59
Volume: 59
Pages: 2-
ISSN (Periodical Title): ISSN : 1347-457X
Text Language Code: jpn
Subject Heading: Jet, Bimodal Excitation, Coherent Structure, Vortex Pairing, Hot-Wire Measurement Flow Visualizaiton
Target Audience: 一般
Note (General): 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
Source: https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43578&item_no=1&attribute_id=31&file_no=1
https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43578&item_no=1&attribute_id=31&file_no=1
Access Restrictions: 限定公開
Data Provider (Database): 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）
https://irdb.nii.ac.jp
Original Data Provider (Database): 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