Experimental study on flow characteristics of gas transport in micro- and nanoscale pores

doi:10.1038/s41598-019-46430-2

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
通讯作者	Song, Fuquan(songfuquan@zjou.edu.cn)
发表期刊	SCIENTIFIC REPORTS
	2019-07-15
卷号	9 页码:10
ISSN	2045-2322
摘要	Gas 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.
DOI	10.1038/s41598-019-46430-2
收录类别	SCI ; SCI
语种	英语
WOS记录号	WOS:000475467800039
关键词[WOS]	SHALE ; MODEL ; NANOPORES ; WATER ; LIQUID
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
资助项目	National 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
项目资助者	National 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
论文分区	二类/Q1
力学所作者排名	1
引用统计	被引频次：58[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/79252
专题	流固耦合系统力学重点实验室
作者单位	1.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
推荐引用方式 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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