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可視化実験による渦構造の定量的解明:速度こう配テンソルの測定
https://jaxa.repo.nii.ac.jp/records/36746
https://jaxa.repo.nii.ac.jp/records/36746cbaa7b57-da89-462a-a792-fe8d14dd8d11
名前 / ファイル | ライセンス | アクション |
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nalsp0028017.pdf (1.7 MB)
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Item type | 会議発表論文 / Conference Paper(1) | |||||
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公開日 | 2015-03-26 | |||||
タイトル | ||||||
タイトル | 可視化実験による渦構造の定量的解明:速度こう配テンソルの測定 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流れの可視化 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 渦構造 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 速度勾配テンソル | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 臨界点 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 断面流線 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 水素気泡法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | エンストロフィー | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 運動量 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 剪断応力 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 渦度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | セパラトリックス | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | flow visualization | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | vortex structure | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | velocity gradient tensor | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | critical point | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | sectional streamline | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | hydrogen bubble method | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | enstrophy | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | momentum | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | shear stress | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | vorticity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | separatorix | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
その他のタイトル(英) | ||||||
その他のタイトル | Quantitative study of vortex structure by means of flow visualization experiment: Measurement of velocity gradient tensor | |||||
著者 |
森, 友紀
× 森, 友紀× 福島, 千晴× 永田, 拓× Mori, Tomonori× Fukushima, Chiharu× Nagata, Hiroshi |
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著者所属 | ||||||
キャノン | ||||||
著者所属 | ||||||
岐阜大学 工学部 | ||||||
著者所属 | ||||||
岐阜大学 工学部 | ||||||
著者所属(英) | ||||||
en | ||||||
Canon Co Ltd | ||||||
著者所属(英) | ||||||
en | ||||||
Gifu University Faculty of Engineering | ||||||
著者所属(英) | ||||||
en | ||||||
Gifu University Faculty of Engineering | ||||||
出版者 | ||||||
出版者 | 航空宇宙技術研究所 | |||||
出版者(英) | ||||||
出版者 | National Aerospace Laboratory (NAL) | |||||
書誌情報 |
航空宇宙技術研究所特別資料 en : Special Publication of National Aerospace Laboratory 巻 28, p. 67-72, 発行日 1995-09 |
|||||
会議概要(会議名, 開催地, 会期, 主催者等) | ||||||
内容記述タイプ | Other | |||||
内容記述 | 航空宇宙技術研究所 Sep. 1994 (15th). Mar. 1995 (16th) 東京 日本 | |||||
会議概要(会議名, 開催地, 会期, 主催者等)(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | National Aerospace Laboratory Sep. 1994 (15th). Mar. 1995 (16th) Tokyo Japan | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 水素気泡法による渦構造の理解への定量的情報を与える技法を提案した。この技法を用いて、円柱の後流近傍の渦領域での速度のみでなく、速度勾配テンソルも得た。この技法に基づいて得た値より、滞留点を通過する断面流線のパターンや、それの渦の中心近傍領域への拡大や渦度の等高線などによって、渦の全体構造を示した。それにより、剪断応力の局所値や渦領域での発散、さらには、全般的な渦の特性値、例えば循環、エンストロフィー、運動量、角運動量など、を決定した。それらの結果は、柱体の背後で形成される渦が、柱体の後流近くの下流で対流を起す時、シート状の渦から棒状の渦への渦構造の変化が起こることを示唆した。 | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A technique for quantitative information was proposed to understand the vortex structure by means of hydrogen bubble techniques. Using the technique, not only the velocity but the velocity gradient tensor was obtained in the vortex region in the near wake of a circular cylinder. Based on the values obtained in this technique, the patterns of sectional streamlines passing through stagnation points and extending to the region near the center of vortices and the contour of vorticity were illustrated to see the overall structure of the vortices. Thus, the local values of shear stress and divergence were determined in the vortex region as well as the global characteristic values of vortices, e. g. circulation, enstrophy, momentum, angular momentum, etc. These results suggest that the vortices change in structure from sheet-like vortices to rod-like vortices when the vortices formed behind the cylinder were convected downstream in the near wake of the cylinder. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0289-260X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN10097345 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: AA0000109017 | |||||
レポート番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | レポート番号: NAL SP-28 |