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Optimization for ultrafast capillary-driven flow in open rectangular microchannels
http://hdl.handle.net/10228/0002001116
http://hdl.handle.net/10228/0002001116f720b145-1dd5-4f96-adcd-e225542237e8
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
10405004.pdf (2.2 MB)
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| アイテムタイプ | 共通アイテムタイプ(1) | |||||||||||
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| 公開日 | 2025-01-15 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Optimization for ultrafast capillary-driven flow in open rectangular microchannels | |||||||||||
| 言語 | en | |||||||||||
| 著者 |
Bao, Jianchen
× Bao, Jianchen
× 長山, 暁子
WEKO
15351
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| 著作権関連情報 | ||||||||||||
| 権利情報 | Copyright (c) 2022 Elsevier Ltd. All rights reserved. | |||||||||||
| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | The Lucas−Washburn (LW) equation has been extensively used to predict the imbibition length of capillary-driven flow. Using the hydraulic diameter for non-circular cross section in the LW equation is widely accepted. Accordingly, the larger the hydraulic diameter, the higher the imbibition rate. However, the validity of the LW equation for the optimization of capillary-driven flow in open rectangular microchannels remains an open question. In this study, we propose a theoretical model to predict the imbibition rate of capillary-driven flow in open rectangular microchannels. To validate the model, we conducted a series of experiments on spontaneous capillary-driven flow of water in open rectangular Si microchannels. We fabricated Si microchannels with hydraulic diameters ranging from 18 to 375 µm to investigate the dependence of the imbibition rate on the hydraulic diameter. The proposed model was consistent with the experimental results. In the case of microchannels with a fixed height, a plot of the measured imbibition rate against the hydraulic diameter was well fitted by a downward-opening parabolic curve, indicating that the imbibition rate had an optimal value at the aspect ratio (width to height) of two. For a given channel width, the imbibition rate increased with the hydraulic diameter, and it leveled off at a large hydraulic diameter for aspect ratios below 0.5. An ultrafast imbibition time of 1.97 s over an entire length of 70 mm was achieved, corresponding to the optimal imbibition rates of 40 mm/s at imbibition length x1 = 34 mm and 19 mm/s at x2 = 68 mm among the experimental cases. | |||||||||||
| 言語 | en | |||||||||||
| 書誌情報 |
en : International Journal of Heat and Mass Transfer 巻 201, 号 1, p. 123629, 発行日 2022-11-08 |
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| 出版社 | ||||||||||||
| 出版者 | Elsevier | |||||||||||
| キーワード | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Capillary-driven flow | |||||||||||
| キーワード | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Wettability | |||||||||||
| キーワード | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Open microchannel | |||||||||||
| キーワード | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Imbibition rate | |||||||||||
| キーワード | ||||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Lucas−Washburn equation | |||||||||||
| 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 | |||||||||||
| 出版タイプ | ||||||||||||
| 出版タイプ | AM | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||
| DOI | ||||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | https://doi.org/10.1016/j.ijheatmasstransfer.2022.123629 | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 0017-9310 | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||
| 収録物識別子 | 1879-2189 | |||||||||||
| 査読の有無 | ||||||||||||
| 値 | yes | |||||||||||
| 研究者情報 | ||||||||||||
| URL | https://hyokadb02.jimu.kyutech.ac.jp/html/28_ja.html | |||||||||||
| 論文ID（連携） | ||||||||||||
| 値 | 10405004 | |||||||||||
| 連携ID | ||||||||||||
| 値 | 10949 | |||||||||||
