| A two-angle model of dynamic wetting in microscale capillaries under low capillary numbers with experiments | |
Lei D; Lin M(林缅) ; Li Y; Jiang WB(江文滨)
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| Source Publication | JOURNAL OF COLLOID AND INTERFACE SCIENCE
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| 2018-06-15 | |
| Volume | 520Pages:91-100 |
| ISSN | 0021-9797 |
| Abstract | Objectives: An accurate model of the dynamic contact angle theta(d) is critical for the calculation of capillary force in applications like enhanced oil recovery, where the capillary number Ca ranges from 10(-10) to 10(-5) and the Bond number Bo is less than 10(-4). The rate-dependence of the dynamic contact angle under such conditions remains blurred, and is the main target of this study. Experiments: Featuring with pressure control and interface tracking, the innovative experimental system presented in this work achieves the desired ranges of Ca and Bo, and enables the direct optical measurement of dynamic contact angles in capillaries as tiny as 40 x 20 (width x height) mu m and 80 x 20 mu m. The advancing and receding processes of wetting and nonwetting liquids were tested. Findings: The dynamic contact angle was confirmed velocity-independent with 10(-9) < Ca < 10(-5) (contact line velocity V = 0.135-490 mu m/s) and it can be described by a two-angle model with desirable accuracy. A modified two-angle model was developed and an empirical form was obtained from experiments. For different liquids contacting the same surface, the advancing angle theta(adv) approximately equals the static contact angle theta(o). The receding angle theta(rec), was found to be a linear function of theta(adv), in good agreement with our and other experiments from the literature. (C) 2018 Elsevier Inc. All rights reserved. |
| Keyword | Dynamic contact angle Liquid-gas displacement Microscale capillary Wetting Two-angle model Contact angle hysteresis |
| DOI | 10.1016/j.jcis.2018.02.074 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000430527800012 |
| WOS Keyword | CONTACT-ANGLE HYSTERESIS ; SOLUTION GAS DRIVE ; POROUS-MEDIA ; ROUGH SURFACES ; 2-PHASE FLOW ; MULTIPHASE FLOW ; LINE DYNAMICS ; OIL-RECOVERY ; KINETICS ; SYSTEMS |
| WOS Research Area | Chemistry, Physical |
| WOS Subject | Chemistry |
| Funding Organization | Chinese Academy of Sciences [XDA14010304] ; National Natural Science Foundation of China [41690132, 41574129] ; National Program on Key Basic Research Project (973 Program) [2014CB239004] ; Major National Science and Technology Special Program of China [2017ZX05037-001] |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/77826 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Xi An Jiao Tong Univ, Sch Chem Engn & Technol, Xian 710049, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Lei D,Lin M,Li Y,et al. A two-angle model of dynamic wetting in microscale capillaries under low capillary numbers with experiments[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,520:91-100. |
| APA | Lei D,林缅,Li Y,&江文滨.(2018).A two-angle model of dynamic wetting in microscale capillaries under low capillary numbers with experiments.JOURNAL OF COLLOID AND INTERFACE SCIENCE,520,91-100. |
| MLA | Lei D,et al."A two-angle model of dynamic wetting in microscale capillaries under low capillary numbers with experiments".JOURNAL OF COLLOID AND INTERFACE SCIENCE 520(2018):91-100. |
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| IrJ2018211.pdf（1304KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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