The effects of surface topography and non-uniform wettability on fluid flow and interface slip in rough nanochannel | |
Yao, Shuting1,2,3; Wang, Jiansheng1,3; Liu, Xueling1,3; Jiao, Yu1,3 | |
2020-03-01 | |
发表期刊 | Journal of Molecular Liquids |
ISSN | 01677322 |
卷号 | 301 |
摘要 | The flow of argon liquid in an asymmetric nanochannel with smooth and rough wall is investigated by molecular dynamics method. Considering the relationships of related factors which include characteristic dimensions, the number and the dense arrangement pattern of nanostructure, the effects of surface topography on fluid flow and interface slip are probed. The results show that the variation of the surface topography height has a significant influence on the fluid flow and interface slip. However, the effect of the variation of topography width is greatly related to the number and dense arrangement pattern of nanostructure. Surface topography causes an increase in interfacial resistance and more reduction in velocity slip at the rough wall, which even results in the forming of sticky boundary condition. The effect of non-uniform interface wettability of rough wall on the flow behavior and slip at the solid–liquid interface is investigated as well. The results show that the influence of non-uniform interface wettability on the flow in the hydrophobic channel is more obvious than that in the hydrophilic channel. Hydrophobic substrate with hydrophobic nanostructures has a smaller interfacial hydrodynamic resistance than that with hydrophilic nanostructures, which makes the average velocity and velocity slip become greater. Obviously, non-uniform interfacial wettability strengthens the effect of surface topography on the fluid flow and interface slip. It is possible to achieve effective velocity slip and obtain drag reduction by applying the non-uniform wettability of nanostructures under the same surface topography. © 2020 Elsevier B.V. |
关键词 | Flow of fluids Hydrophilicity Hydrophobicity Molecular dynamics Nanostructures Phase interfaces Quay walls Slip forming Surface topography Velocity Wetting Hydrodynamic resistance Hydrophilic channels Hydrophobic substrate Interface slip Interfacial resistances Molecular dynamics methods Nano channels Non-uniform wettability |
DOI | 10.1016/j.molliq.2020.112460 |
收录类别 | SCIE ; EI |
语种 | 英语 |
WOS研究方向 | Chemistry ; Physics |
WOS类目 | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
WOS记录号 | WOS:000517659700080 |
出版者 | Elsevier B.V., Netherlands |
EI入藏号 | 20200408070408 |
EI主题词 | Topography |
EI分类号 | 407.1 Maritime Structures - 412 Concrete - 631.1 Fluid Flow, General - 761 Nanotechnology - 801.4 Physical Chemistry - 931.2 Physical Properties of Gases, Liquids and Solids - 933 Solid State Physics - 951 Materials Science |
来源库 | Compendex |
分类代码 | 407.1 Maritime Structures - 412 Concrete - 631.1 Fluid Flow, General - 761 Nanotechnology - 801.4 Physical Chemistry - 931.2 Physical Properties of Gases, Liquids and Solids - 933 Solid State Physics - 951 Materials Science |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/115238 |
专题 | 石油化工学院 |
通讯作者 | Wang, Jiansheng; Liu, Xueling |
作者单位 | 1.Tianjin Univ, Sch Mech Engn, Tianjin Key Lab Nonlinear Dynam & Chaos Control, Tianjin 300350, Peoples R China; 2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China; 3.Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300350, Peoples R China |
第一作者单位 | 石油化工学院 |
推荐引用方式 GB/T 7714 | Yao, Shuting,Wang, Jiansheng,Liu, Xueling,et al. The effects of surface topography and non-uniform wettability on fluid flow and interface slip in rough nanochannel[J]. Journal of Molecular Liquids,2020,301. |
APA | Yao, Shuting,Wang, Jiansheng,Liu, Xueling,&Jiao, Yu.(2020).The effects of surface topography and non-uniform wettability on fluid flow and interface slip in rough nanochannel.Journal of Molecular Liquids,301. |
MLA | Yao, Shuting,et al."The effects of surface topography and non-uniform wettability on fluid flow and interface slip in rough nanochannel".Journal of Molecular Liquids 301(2020). |
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