| 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
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| Source Publication | Soft Matter
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| 2011 | |
| Volume | 7Issue:18Pages:8628-8634 |
| ISSN | 1744-683X |
| Abstract | 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. |
| Keyword | Fast Water Transport Carbon Nanotubes Dependent Friction Surfaces Flow Dynamics |
| Subject Area | Chemistry ; Materials Science ; Physics ; Polymer Science |
| DOI | 10.1039/c1sm05543g |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000294447600094 |
| WOS Keyword | FAST WATER TRANSPORT ; CARBON NANOTUBES ; DEPENDENT FRICTION ; SURFACES ; FLOW ; DYNAMICS |
| WOS Research Area | Chemistry ; Materials Science ; Physics ; Polymer Science |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary ; Polymer Science |
| Funding Organization | 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. |
| Department | LNM纳/微系统力学与物理力学 |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/44951 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Zhao, YP (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China |
| Recommended Citation 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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