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角柱後流の対流不安定性から絶対不安定性への交替
https://jaxa.repo.nii.ac.jp/records/4884
https://jaxa.repo.nii.ac.jp/records/4884bd37e84a-02dd-4b00-bd8c-f206a2cdec31
名前 / ファイル | ライセンス | アクション |
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64575008.pdf (860.3 kB)
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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 | 角柱後流の対流不安定性から絶対不安定性への交替 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | wake, rectangular cylinder, Karman vortex street, absolute instability, convective instability | |||||
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 | Transition of convectively unstable flow past a rectangular cylinder to an absolutely unstable state | |||||
著者 |
武本, 幸生
× 武本, 幸生× 水島, 二郎× Takemoto, Yukio× Mizushima, Jiro |
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著者所属 | ||||||
SIMULIA Corp. | ||||||
著者所属 | ||||||
同志社大学理工学部機械システム工学科 | ||||||
著者所属(英) | ||||||
en | ||||||
Dassault Systemes Simulia Corp. | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Mechanical Engineering, Graduate School of Engineering, Doshisha University | ||||||
出版者 | ||||||
出版者 | 宇宙航空研究開発機構 | |||||
出版者(英) | ||||||
出版者 | Japan Aerospace Exploration Agency (JAXA) | |||||
書誌情報 |
宇宙航空研究開発機構特別資料: 「境界層遷移の解明と制御」研究会講演論文集(第43回・第44回) en : JAXA Special Publication: Proceedings of the 43rd and 44th JAXA Workshops on "Investigation and Control of Boundar-Layer Transition" 巻 JAXA-SP-09-014, 発行日 2010-02-26 |
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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 | 第43回(2008年10月2日-10月3日)「境界層遷移の解明と制御」研究会; 第44回(2009年3月26日-3月27日)「境界層遷移の解明と制御」研究会 | |||||
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 | 43rd JAXA Workshops on "Investigation and Control of Boundar-Layer Transition" (October 2-3, 2008) ; 44th JAXA Workshops on "Investigation and Control of Boundar-Layer Transition" (March 26-27, 2009) | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Transition of convectively unstable flow past a rectangular cylinder to an absolutely unstable state is investigated numerically, in which a localized disturbance is observed is added at a certain point in the flow field and the subsequent spatio-temporal development of the disturbance is observed. We found that added localized disturbance propagates immediately to an absolutely unstable region just behind the cylinder, and then, it is convected downstream after growing in the absolutely unstable region if the flow is globally unstable (at supercritical Reynolds numbers). The boundary separating the absolutely and convectively unstable region is estimated in numerical simulation for the non-parallel two-dimensional flow in which the flow is approximated by the parallel flow field in the downstream region than a prescribed distance behind the cylinder. We conclude that the existence of the absolutely unstable region causes the global instability of the flow and that the theory of stability for parallel flow is sufficient to identify the location and the scale of the absolutely unstable region. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1349-113X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11984031 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: AA0064575008 | |||||
レポート番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | レポート番号: JAXA-SP-09-014 |