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Asymptotic turbulent friction in 2D rough-walled flows
https://oist.repo.nii.ac.jp/records/1922
https://oist.repo.nii.ac.jp/records/192219d1f000-6e6a-4387-903f-ec641bbf1c17
名前 / ファイル | ライセンス | アクション |
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-- (1.0 MB)
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Creative Commons Attribution-NonCommercial 4.0 International(https://creativecommons.org/licenses/by-nc/4.0/)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-02-08 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Asymptotic turbulent friction in 2D rough-walled flows | |||||
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(英) |
Vilquin, Alexandre
× Vilquin, Alexandre× Jagielka, Julie× Djambov, Simeon× Herouard, Hugo× Fisher, Patrick× Bruneau, Charles-Henri× Chakraborty, Pinaki× Gioia, Gustavo× Kellay, Hamid |
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書誌情報 |
en : Science Advances 巻 7, 号 5, p. eabc6234, 発行日 2021-01-29 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The friction f is the property of wall-bounded flows that sets the pumping cost of a pipeline, the draining capacity of a river, and other variables of practical relevance. For highly turbulent rough-walled pipe flows, f depends solely on the roughness length scale r, and the f − r relation may be expressed by the Strickler empirical scaling f ∝ r1/3. Here, we show experimentally that for soap film flows that are the two-dimensional (2D) equivalent of highly turbulent rough-walled pipe flows, f ∝ r and the f − r relation is not the same in 2D as in 3D. Our findings are beyond the purview of the standard theory of friction but consistent with a competing theory in which f is linked to the turbulent spectrum via the spectral exponent α: In 3D, α = 5/3 and the theory yields f ∝ r1/3; in 2D, α = 3 and the theory yields f ∝ r. | |||||
出版者 | ||||||
出版者 | American Association for the Advancement of Science | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2375-2548 | |||||
PubMed番号 | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | PMID | |||||
関連識別子 | info:pmid/33514543 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1126/sciadv.abc6234 | |||||
権利 | ||||||
権利情報 | © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://advances.sciencemag.org/content/7/5/eabc6234 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |