IMECH-IR  > 流固耦合系统力学重点实验室
Experimental study on flow characteristics of gas transport in micro- and nanoscale pores
Shen WJ(沈伟军); Song FQ; Hu X; Zhu GM; Zhu WY
Corresponding AuthorSong, Fuquan(songfuquan@zjou.edu.cn)
Source PublicationSCIENTIFIC REPORTS
2019-07-15
Volume9Pages:10
ISSN2045-2322
AbstractGas flow behavior in porous media with micro-and nanoscale pores has always been attracted great attention. Gas transport mechanism in such pores is a complex problem, which includes continuous flow, slip flow and transition flow. In this study, the microtubes of quartz microcapillary and nanopores alumina membrane were used, and the gas flow measurements through the microtubes and nanopores with the diameters ranging from 6.42 mu m to 12.5 nm were conducted. The experimental results show that the gas flow characteristics are in rough agreement with the Hagen-Poiseuille (H-P) equation in microscale. However, the flux of gas flow through the nanopores is larger than the H-P equation by more than an order of magnitude, and thus the H-P equation considerably underestimates gas flux. The Knudsen diffusion and slip flow coexist in the nanoscale pores and their contributions to the gas flux increase as the diameter decreases. The slip flow increases with the decrease in diameter, and the slip length decreases with the increase in driving pressure. Furthermore, the experimental gas flow resistance is less than the theoretical value in the nanopores and the flow resistance decreases along with the decrease in diameter, which explains the phenomenon of flux increase and the occurrence of a considerable slip length in nanoscale. These results can provide insights into a better understanding of gas flow in micro-and nanoscale pores and enable us to exactly predict and actively control gas slip.
DOI10.1038/s41598-019-46430-2
Indexed BySCI ; SCI
Language英语
WOS IDWOS:000475467800039
WOS KeywordSHALE ; MODEL ; NANOPORES ; WATER ; LIQUID
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
Funding ProjectNational Major Project of China[2017ZX05072005] ; National Natural Science Foundation of China[11472246] ; National Natural Science Foundation of China[U1762216] ; National Natural Science Foundation of China[11802312] ; Youth Foundation of Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Chinese Academy of Sciences
Funding OrganizationNational Major Project of China ; National Natural Science Foundation of China ; Youth Foundation of Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Chinese Academy of Sciences
Classification二类/Q1
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79252
Collection流固耦合系统力学重点实验室
Affiliation1.Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences
2.School of Petrochemical and Energetic Engineering, Zhejiang Ocean University
3.School of Civil and Resource Engineering, University of Science and Technology Beijing
Recommended Citation
GB/T 7714
Shen WJ,Song FQ,Hu X,et al. Experimental study on flow characteristics of gas transport in micro- and nanoscale pores[J]. SCIENTIFIC REPORTS,2019,9:10.
APA Shen WJ,Song FQ,Hu X,Zhu GM,&Zhu WY.(2019).Experimental study on flow characteristics of gas transport in micro- and nanoscale pores.SCIENTIFIC REPORTS,9,10.
MLA Shen WJ,et al."Experimental study on flow characteristics of gas transport in micro- and nanoscale pores".SCIENTIFIC REPORTS 9(2019):10.
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