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液滴蒸発における固液気三相界面および隣接液滴の寄与に関する研究
https://doi.org/10.18997/0002000344
https://doi.org/10.18997/0002000344b67be1b1-718f-44f5-bdc9-831cabfbe3e9
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kou_k_567.pdf (3.5 MB)
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| アイテムタイプ | 学位論文 = Thesis or Dissertation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-01-25 | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| タイトル | ||||||||
| タイトル | Contribution of Solid-liquid-vapor Interface and Adjacent Droplets to Droplet Evaporation | |||||||
| 言語 | en | |||||||
| タイトル | ||||||||
| タイトル | 液滴蒸発における固液気三相界面および隣接液滴の寄与に関する研究 | |||||||
| 言語 | ja | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 著者 |
Rehman, Muhammad Mohib Ur
× Rehman, Muhammad Mohib Ur
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | The evaporation of droplets on a flat solid surface has been extensively studied, and it is well known that droplets evaporate from the liquid–vapor interface to the surroundings. However, the evaporation of droplets on micro/nanostructured surfaces and the evaporation of droplets surrounded by adjacent droplets is not well understood. In the former case, the contribution of the solid–liquid–vapor three phase interface formed near the macroscopic contact line to droplet evaporation become significant in addition to the liquid–vapor interface. In this work, the effects of solid–liquid–vapor three phase interface and adjacent droplet array on droplet evaporation are investigated theoretically, experimentally, and numerically. In addition, it was clarified that droplets surrounded by adjacent droplet arrays are inhibited from evaporating due to synergistic effects such as arrangement of adjacent droplets and interfacial wettability. The scale of the solid–liquid–vapor three phase interface was estimated to be in the range of 253-940 μm for the measured droplet of 4μL on micro/nanostructured surfaces. In addition, the results show that the scale of the solid–liquid–vapor three phase interface and the amount of evaporation from it increase as the initial contact angle decreases and the droplet volume increases. It was further shown that the contribution of the solid–liquid–vapor three phase interface to the droplet evaporation is 16-48%, and it was clarified that the evaporation from solid–liquid–vapor three phase interface cannot be ignored for micro/nanostructured surfaces. We have found that the arrangement of droplets, such as the number, size and spacing of adjacent droplets, significantly affects the evaporation of the reference droplets. The evaporation rate of a reference droplet in the array decreases monotonically as the number of adjacent droplets increases, and this suppression effect decreases as the distance between adjacent droplets increases. We found that the adjacent droplets do not affect the evaporation of the reference droplet if the size of the adjacent droplets is sufficiently smaller than that of the reference droplet. It was also shown that the reference droplets surrounded by adjacent droplet arrays are inhibited from evaporating due to synergistic effects such as arrangement of adjacent droplets and interfacial wettability. We developed a model involving a contact angle function to accurately predict the evaporation rate of reference droplets on flat surfaces with an arbitrary contact angle in the array. We demonstrate that the contact angle function introduced in the present model should not be ignored when predicting the evaporation rates of reference droplets in an array on hydrophobic surfaces. The results obtained in this research are expected to deepen our understanding of droplet evaporation phenomena on solid surfaces and can be applied in a wide range of scientific and engineering fields such as inkjet printing systems and bio-measurement. |
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| 言語 | en | |||||||
| 目次 | ||||||||
| 内容記述タイプ | TableOfContents | |||||||
| 内容記述 | 1 Introduction||2 Contribution of solid–liquid–vapor interface to droplet evaporation||3 Contribution of adjacent droplets to droplet evaporation||4 Conclusions and outlook | |||||||
| 言語 | en | |||||||
| 備考 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 九州工業大学博士学位論文 学位記番号: 工博甲第567号 学位授与年月日: 令和5年3月24日 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Droplet | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Evaporation | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Wetting | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Liquid–vapor interface | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Solid–liquid–vapor interface | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Droplet array | |||||||
| アドバイザー | ||||||||
| 長山, 暁子 | ||||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第567号 | |||||||
| 学位名 | ||||||||
| 学位名 | 博士（工学） | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2023-03-24 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 17104 | |||||||
| 学位授与機関名 | 九州工業大学 | |||||||
| 学位授与年度 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 令和4年度 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.18997/0002000344 | |||||||
| ID登録タイプ | JaLC | |||||||
