Droplet sliding on an inclined substrate with chemical defects
文献类型：期刊论文
| 作者 | Chen, Jing-Wei; Zhang, Chun-Yu; Gao, Peng; Liu, Hao-Ran; Ding, Hang |
| 刊名 | INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
 |
| 出版日期 | 2026 |
| 卷号 | 194页码:10 |
| 关键词 | Droplet Contact line Chemical defects Contact angle hysteresis |
| ISSN号 | 0301-9322 |
| DOI | 10.1016/j.ijmultiphaseflow.2025.105445 |
| 通讯作者 | Liu, Hao-Ran(liuhr@ustc.edu.cn) ; Ding, Hang(hding@ustc.edu.cn) |
| 英文摘要 | We numerically study the dynamics of a droplet sliding on an inclined and inhomogeneous substrate under gravity force using three-dimensional diffuse interface method. On the path of the sliding droplet, there are two transversely located defects with the shape of circle, and their wettability is different from the substrate. Our aim is to identify the regimes of the droplet motion and figure out the critical conditions between the different regimes. By varying the distance between the two defects, the inclination angle of the substrate, and the size of the defects, three regimes are found according to the status of the droplet: capture, breakup and release. By analyzing geometrical relationships, the shape of the contact line and the force balance of the droplet at rest, we derive critical conditions between each two regimes. The theoretical predictions of critical conditions agree well with our numerical simulations, which provide a comprehensive understanding of the underlying mechanisms of a droplet sliding on a chemical defect substrate. |
| 分类号 | 二类/Q1 |
| WOS关键词 | MOTION ; WETTABILITY ; SURFACES ; FLOWS ; SHAPE |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001573335000001 |
| 其他责任者 | Liu, Hao-Ran，Ding, Hang |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/103925]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | Univ Sci & Technol China, Sch Engn Sci, State Key Lab High Temp Gas Dynam, Hefei 230027, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jing-Wei,Zhang, Chun-Yu,Gao, Peng,et al. Droplet sliding on an inclined substrate with chemical defects[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2026,194:10. |
| APA | Chen, Jing-Wei,Zhang, Chun-Yu,Gao, Peng,Liu, Hao-Ran,&Ding, Hang.(2026).Droplet sliding on an inclined substrate with chemical defects.INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,194,10. |
| MLA | Chen, Jing-Wei,et al."Droplet sliding on an inclined substrate with chemical defects".INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 194(2026):10. |
入库方式： OAI收割
来源：力学研究所
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