Effect of surface property on mass flux in a variable-section microchannel | |
Xu, Weicheng1,2; Yong, Yumei1; Xu, Junbo1; Yang, Chao1,2 | |
刊名 | CHINESE JOURNAL OF CHEMICAL ENGINEERING |
2017-04-01 | |
卷号 | 25期号:4页码:401-407 |
关键词 | Hydrophobic Surface Boundary Slip Complex Microchannel Lattice Boltzmann Method |
ISSN号 | 1004-9541 |
DOI | 10.1016/j.cjche.2016.10.011 |
文献子类 | Article |
英文摘要 | For microfluidic systems, interfacial phenomena in micro-reactors are of great importance because they control the transfer and reaction characteristics. This paper dwells on how the surface property and geometry influence the mass flux in a complex microchannel. The lattice Boltzmann method (LBM) with a pseudo potential model and the Shan-Chen model for the interaction between fluid and hydrophobic surface were built up, so a boundary slip effect was added and verified. On this basis, a microchannel with variable-section geometry was simulated. The results indicate that the optimal design and the flow pattern are quite different under hydrophilic and hydrophobic conditions. A microchannel with sequential hydrophilic and hydrophobic surface was also simulated. The numerical results indicate that the hydrophobic wall can improve the mass flux, irrespective of microchannel geometry. Particularly, an empirical correlation with a linearly relationship between length of hydrophobic segment and mass flux was obtained for the straight microchannel. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved. |
WOS关键词 | Lattice Boltzmann Method ; Apparent Slip ; Hydrophobic Microchannels ; Carbon Nanotubes ; Boundary Slip ; Simulation ; Model ; Flow ; Walls |
WOS研究方向 | Engineering |
语种 | 英语 |
WOS记录号 | WOS:000402913500003 |
资助机构 | National Key Research and Development Program(2016YFB0301701) ; National Natural Science Foundation of China(21276256 ; 21490584 ; 91534105) |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/22626] |
专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
作者单位 | 1.Chinese Acad Sci, Key Lab Green Proc & Engn, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Weicheng,Yong, Yumei,Xu, Junbo,et al. Effect of surface property on mass flux in a variable-section microchannel[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2017,25(4):401-407. |
APA | Xu, Weicheng,Yong, Yumei,Xu, Junbo,&Yang, Chao.(2017).Effect of surface property on mass flux in a variable-section microchannel.CHINESE JOURNAL OF CHEMICAL ENGINEERING,25(4),401-407. |
MLA | Xu, Weicheng,et al."Effect of surface property on mass flux in a variable-section microchannel".CHINESE JOURNAL OF CHEMICAL ENGINEERING 25.4(2017):401-407. |
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