A two-angle model of dynamic wetting in microscale capillaries under low capillary numbers with experiments

doi:10.1016/j.jcis.2018.02.074

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	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)
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2018-06-15
卷号	520 页码:91-100
关键词	Dynamic contact angle Liquid-gas displacement Microscale capillary Wetting Two-angle model Contact angle hysteresis
ISSN号	0021-9797
DOI	10.1016/j.jcis.2018.02.074
英文摘要	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.
分类号	二类/Q1
URL标识	查看原文
WOS关键词	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
语种	英语
WOS记录号	WOS:000430527800012
资助机构	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]
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/77826]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
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
推荐引用方式 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.