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On the concept of hydraulically smooth wall
https://jaxa.repo.nii.ac.jp/records/5527
https://jaxa.repo.nii.ac.jp/records/5527340b82b0-2282-43d8-8dd8-33b28673b787
名前 / ファイル | ライセンス | アクション |
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63908006.pdf (382.4 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 | ||||||
言語 | en | |||||
タイトル | On the concept of hydraulically smooth wall | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 平滑壁 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 表面粗さ | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 粗面効果 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 遷移流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流れの安定性 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 層流-乱流遷移 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 進行波 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 等価粗度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 渦 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | レイノルズ数 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 乱流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 境界条件 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | smooth wall | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | surface roughness | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | surface roughness effect | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | transition flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | flow stability | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | laminar-turbulent transition | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | traveling wave | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | equivalent roughness | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | vortex | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Reynolds number | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | turbulent flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | boundary condition | |||||
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 | |||||
著者 |
Floryan, J. M.
× Floryan, J. M.× Floryan, J. M. |
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著者所属 | ||||||
University of Western Ontario Department of Mechanical and Materials Engineering | ||||||
著者所属(英) | ||||||
en | ||||||
University of Western Ontario Department of Mechanical and Materials Engineering | ||||||
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40回 en : JAXA Special Publication: Proceedings of the 40th JAXA Workshop on Investigation and Control of Boundary-Layer Transition 巻 JAXA-SP-07-026E, p. 17-20, 発行日 2008-02-29 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A search for a precise definition of hydraulically smooth wall is carried out. It is argued that in the case of transitional flows such definition can be based on the onset of flow instabilities. Flow in a channel with distributed surface roughness is considered as a case study. Results of the linear stability analysis show that the presence of the roughness destabilizes the traveling-wave instability as well as introduces a new instability that manifests itself in the form of streamwise vortices. The critical conditions for the occurrence of both instabilities are given for different classes of roughness shape. It is shown that these conditions can be predicted with a reasonable accuracy in the case of an arbitrary (but Fourier transformable) roughness by considering only the leading Fourier mode (wavy-wall model). A segment in the parameter space where the roughness does not induce any instability regardless of its shape has been identified; this segment identifies conditions under which the rough wall behaves as a hydraulically smooth wall. | |||||
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: AA0063908006 | |||||
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-07-026E |