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Turbulent channel flow controlled by traveling-wave-like body force mimicking oscillating thin films
https://uec.repo.nii.ac.jp/records/10323
https://uec.repo.nii.ac.jp/records/10323770f80d3-bc94-4464-a795-99797ef9560a
名前 / ファイル | ライセンス | アクション |
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yamamoto_v6fin_v2.pdf (4.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2023-03-13 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Turbulent channel flow controlled by traveling-wave-like body force mimicking oscillating thin films | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
山本, 遼
× 山本, 遼× 森田, 淳一× 守, 裕也× 宮嵜, 武× 原, 峻平 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | To improve energy efficiency, flow control techniques for skin-friction drag and heat transfer with regard to wall turbulence are essential. This study performs direct numerical simulation of turbulent channel flows. The traveling-wave-like body force is employed as the flow control technique to break the similarity between momentum and heat transfer. The traveling wave control mimics the self-excited thin film in the corresponding experimental study. When the wave traveled slowly along the downstream direction, the skin-friction drag, heat transfer, and analogy factor were found to increase. Moreover, these parameters increased with an increase in the reference height of the traveling wave (h_w). Flow visualization shows turbulence enhancement owing to the increase in h_w. Three-component decomposition elucidates the difference between the control effect on the Reynolds shear stress and the turbulent heat flux. | |||||
書誌情報 |
en : Physics of Fluids 巻 34, 号 8, p. 085106, 発行日 2022-08-08 |
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出版者 | ||||||
出版者 | American Institute of Physics (AIP) | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 10706631 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/5.0096823 | |||||
権利 | ||||||
権利情報 | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in [Physics of Fluids] and may be found at (https://doi.org/10.1063/5.0096823). | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/5.0096823 | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |