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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)
2018-06-15
发表期刊JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷号520页码:91-100
ISSN0021-9797
摘要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.
关键词Dynamic contact angle Liquid-gas displacement Microscale capillary Wetting Two-angle model Contact angle hysteresis
DOI10.1016/j.jcis.2018.02.074
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000430527800012
关键词[WOS]CONTACT-ANGLE HYSTERESIS ; SOLUTION GAS DRIVE ; POROUS-MEDIA ; ROUGH SURFACES ; 2-PHASE FLOW ; MULTIPHASE FLOW ; LINE DYNAMICS ; OIL-RECOVERY ; KINETICS ; SYSTEMS
WOS研究方向Chemistry, Physical
WOS类目Chemistry
项目资助者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]
论文分区二类/Q1
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77826
专题流固耦合系统力学重点实验室
作者单位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
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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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