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Secondary flows of viscoelastic fluids in serpentine microchannels
https://oist.repo.nii.ac.jp/records/1063
https://oist.repo.nii.ac.jp/records/1063a4fb958a-9068-46ad-a6a1-c75b216deec7
名前 / ファイル | ライセンス | アクション |
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Ducloue_etal_MANO2019_uncorrectedproof (1.5 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-08-22 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Secondary flows of viscoelastic fluids in serpentine microchannels | |||||
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) |
Ducloué, Lucie
× Ducloué, Lucie× Casanellas, Laura× Haward, Simon J.× Poole, Robert J.× Alves, Manuel A.× Lerouge, Sandra× Shen, Amy Q.× Lindner, Anke |
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書誌情報 |
en : Microfluidics and Nanofluidics 巻 23, 号 33, 発行日 2019-02-05 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Secondary flows are ubiquitous in channel flows, where small velocity components perpendicular to the main velocity appear due to the complexity of the channel geometry and/or that of the flow itself such as from inertial or non-Newtonian effects. We investigate here the inertialess secondary flow of viscoelastic fluids in curved microchannels of rectangular cross-section and constant but alternating curvature: the so-called “serpentine channel” geometry. Numerical calculations (Poole et al. J Non-Newton Fluid Mech 201:10–16, 2013) have shown that in this geometry, in the absence of elastic instabilities, a steady secondary flow develops that takes the shape of two counter-rotating vortices in the plane of the channel cross-section. We present the first experimental visualization evidence and characterisation of these steady secondary flows, using the complementary techniques of quantitative microparticle image velocimetry in the centreplane of the channel, and confocal visualisation of dye-stream transport in the cross-sectional plane. We show that the measured streamlines and the relative velocity magnitude of the secondary flows are in qualitative agreement with the numerical results. In addition to our techniques being broadly applicable to the characterisation of three-dimensional flow structures in microchannels, our results are important for understanding the onset of instability in serpentine viscoelastic flows. | |||||
出版者 | ||||||
出版者 | Springer Berlin Heidelberg | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1613-4982 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1613-4990 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1007/s10404-019-2195-0 | |||||
権利 | ||||||
権利情報 | © 2019 Springer-Verlag GmbH Germany, part of Springer Nature | |||||
権利 | ||||||
権利情報 | This is a post-peer-review, pre-copyedit version of an article published in Microfluidics and Nanofluidics. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10404-019-2195-0 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://link.springer.com/article/10.1007/s10404-019-2195-0 | |||||
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 |