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Modification of near-wall turbulence for drag reduction by spanwise oscillating Lorentz force
https://jaxa.repo.nii.ac.jp/records/6567
https://jaxa.repo.nii.ac.jp/records/6567bb57bee5-fb1f-4983-87e6-d47b42311bef
名前 / ファイル | ライセンス | アクション |
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47776013.pdf (2.6 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 | ||||||
言語 | en | |||||
タイトル | Modification of near-wall turbulence for drag reduction by spanwise oscillating Lorentz force | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ローレンツ力 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 壁面近傍乱流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 表面摩擦 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 乱流境界層 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 境界層遷移 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 電磁乱流制御 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | スパン方向振動 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 抗力低減 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Lorentz force | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | near-wall turbulence | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | skin friction | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | turbulent boundary layer | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | boundary layer transition | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | electromagnetic turbulence control | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | spanwise oscillation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | drag reduction | |||||
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 | ||||||
その他のタイトル | ローレンツ力によるスパン方向振動を用いた乱流抵抗低減に関する研究 | |||||
著者 |
Pang, Junguo
× Pang, Junguo× Choi, Kwing-So× 瀬川, 武彦× 吉田, 博夫× Pang, Junguo× Choi, Kwing-So× Segawa, Takehiko× Yoshida, Hiroo |
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著者所属 | ||||||
産業技術総合研究所 | ||||||
著者所属 | ||||||
University of Nottingham School of MMMEM | ||||||
著者所属 | ||||||
産業技術総合研究所 | ||||||
著者所属 | ||||||
産業技術総合研究所 | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Advanced Industrial Science and Technology | ||||||
著者所属(英) | ||||||
en | ||||||
University of Nottingham School of MMMEM | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Advanced Industrial Science and Technology | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Advanced Industrial Science and Technology | ||||||
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33回・第34回 en : JAXA Special Publication: Proceedings of the 33rd and 34th JAXA Workshops on Investigation and Control of Boundary-Layer Transition 巻 JAXA-SP-04-002, p. 39-44, 発行日 2005-01-28 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The results of an experimental investigation on the effect of a spanwise oscillating Lorentz force on the near-wall turbulent structures for drag reduction are presented in this paper. Comparing with the case of turbulent control by spanwise wall oscillation, a parameter called equivalent spanwise wall velocity W(+)(sub eq) = StT(+)/(2pi Re(sub tau)), is defined and emphasized as a virtual spanwise wall velocity scale under Lorentz force oscillation. It is shown that when W(+)(sub eq) approximately equal to 10 to 15, up to 30 to 40 percent skin frictional drag reduction could be achieved just at the downstream of the control area. Meanwhile, an oscillation amplitude investigation suggests that to achieve maximum skin friction reduction, the oscillation Lorentz force should be able to shift the near-wall streamwise vortices into spanwise direction by a peak to peak displacement of about 100 wall units during each period. A conceptual model to explain the mechanism for drag reduction under the spanwise Lorentz force oscillation is also presented. | |||||
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: AA0047776013 | |||||
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-04-002 |