Slip boundary conditions based on molecular kinetic theory: The critical shear stress and the energy dissipation at the liquid-solid interface

doi:10.1039/c1sm05543g

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	Slip boundary conditions based on molecular kinetic theory: The critical shear stress and the energy dissipation at the liquid-solid interface
	Wang FC(王奉超); Zhao YP(赵亚溥); Zhao, YP (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
发表期刊	Soft Matter
	2011
卷号	7 期号:18 页码:8628-8634
ISSN	1744-683X
摘要	The boundary slip and its mechanism were investigated using theoretical analysis and molecular dynamic simulations. We proposed a new slip boundary condition based on molecular kinetic theory, which was extended by the introduction of the critical shear stress, which determines the onset of the slip, and the energy dissipation near the liquid-solid interface at high shear stress. Our results revealed that the critical shear stress increases exponentially with the liquid-solid interactions. In particular, we discussed the energy dissipation contributed from the friction between the liquid layers near the interface. The results demonstrated that the momentum transfer among the liquid layers and the bulk liquid must be considered according to the wetting conditions of the solid surface, which can interpret the contradictory published results of slip behavior at high shear stress. The analytical expression of our slip boundary condition can be compared with the simulation results since it uses parameters consistent with that used in our molecular dynamic simulations. Furthermore, we suggested a dimensionless number to qualify the transition from Poiseuille-like to plug-like flow in the carbon nanotubes. These findings can enhance our understanding of the boundary slip.
关键词	Fast Water Transport Carbon Nanotubes Dependent Friction Surfaces Flow Dynamics
学科领域	Chemistry ; Materials Science ; Physics ; Polymer Science
DOI	10.1039/c1sm05543g
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000294447600094
关键词[WOS]	FAST WATER TRANSPORT ; CARBON NANOTUBES ; DEPENDENT FRICTION ; SURFACES ; FLOW ; DYNAMICS
WOS研究方向	Chemistry ; Materials Science ; Physics ; Polymer Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary ; Polymer Science
项目资助者	This work was jointly supported by the National Basic Research Program of China (973 Program, Grant No. 2007CB310500), the National Natural Science Foundation of China (NSFC, Grant Nos. 60936001 and 11072244) and the Shanghai Supercomputer Center.
课题组名称	LNM纳/微系统力学与物理力学
论文分区	一类
引用统计	被引频次：79[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/44951
专题	非线性力学国家重点实验室
通讯作者	Zhao, YP (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang FC,Zhao YP,Zhao, YP . Slip boundary conditions based on molecular kinetic theory: The critical shear stress and the energy dissipation at the liquid-solid interface[J]. Soft Matter,2011,7,18,:8628-8634.
APA	王奉超,赵亚溥,&Zhao, YP .(2011).Slip boundary conditions based on molecular kinetic theory: The critical shear stress and the energy dissipation at the liquid-solid interface.Soft Matter,7(18),8628-8634.
MLA	王奉超,et al."Slip boundary conditions based on molecular kinetic theory: The critical shear stress and the energy dissipation at the liquid-solid interface".Soft Matter 7.18(2011):8628-8634.

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