Effect of surface property on mass flux in a variable-section microchannel
Xu, Weicheng1,2; Yong, Yumei1; Xu, Junbo1; Yang, Chao1,2
2017-04-01
发表期刊CHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
卷号25期号:4页码:401-407
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.
关键词Hydrophobic Surface Boundary Slip Complex Microchannel Lattice Boltzmann Method
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cjche.2016.10.011
收录类别SCI
语种英语
关键词[WOS]LATTICE BOLTZMANN METHOD ; APPARENT SLIP ; HYDROPHOBIC MICROCHANNELS ; CARBON NANOTUBES ; BOUNDARY SLIP ; SIMULATION ; MODEL ; FLOW ; WALLS
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Key Research and Development Program(2016YFB0301701) ; National Natural Science Foundation of China(21276256 ; 21490584 ; 91534105)
WOS记录号WOS:000402913500003
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22626
专题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
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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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