Influence of Capillarity on Nano-Liter Flowrate Measuremet with Displacemet Method

doi:10.1016/S1001-6058(07)60158-9

IMECH-IR > 力学所知识产出(1956-2008)

	Influence of Capillarity on Nano-Liter Flowrate Measuremet with Displacemet Method
	Guo Q; Cheng R; Li ZH(李战华); Guo, Q (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
发表期刊	JOURNAL OF HYDRODYNAMICS
	2007
卷号	19 期号:5 页码:594-600
ISSN	1001-6058
摘要	Nano-liter flowrate measurements in micro-tubes with displacement method were performed and the effect of capillarity force on the accuracy was investigated through lab experiments and theoretical analysis in this article. The experiments were conducted under the pressure drops ranging from 1 kPa to 10 kPa in a circular pipe with a diameter of 50 mu m, to give the pressure-flowrate (P-Q) relation and verify the applicability of the classical Hagen-Poiseuille (HP) formula. The experimental results showed that there existed a discrepancy between the experimental data and the theoretical values predicted by the HP formula if the capillary effect was not considered, which exceeded obviously the limit of the system error. And hence a modified formula for the relation, taking the capillary effect into account, was presented through theoretical deduction, and after the HP formula had been modified the error was proved to be less than 3%, which was permitted in comparison with the system error. It was also concluded that only by eliminating the effect of the capillary force in experiments could the original HP formula be employed to predict the pressure-flowrate relation in the Hagen-Poiseuille flow in the micro-tube.
关键词	Nano-liter Flowrate Measurement Hagen-poiseuille (Hp) Formula Displacement Method Capillarity Force
DOI	10.1016/S1001-6058(07)60158-9
收录类别	SCI
语种	英语
WOS记录号	WOS:000208248100009
WOS研究方向	Mechanics
WOS类目	Mechanics
项目资助者	National Natural Science Foundation of China [10272107] ; Chinese Academy of Sciences [KJCX2-SW-L2]
引用统计	被引频次：5[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/311007/58454
专题	力学所知识产出(1956-2008)
通讯作者	Guo, Q (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Guo Q,Cheng R,Li ZH,et al. Influence of Capillarity on Nano-Liter Flowrate Measuremet with Displacemet Method[J]. JOURNAL OF HYDRODYNAMICS,2007,19,5,:594-600.
APA	Guo Q,Cheng R,李战华,&Guo, Q .(2007).Influence of Capillarity on Nano-Liter Flowrate Measuremet with Displacemet Method.JOURNAL OF HYDRODYNAMICS,19(5),594-600.
MLA	Guo Q,et al."Influence of Capillarity on Nano-Liter Flowrate Measuremet with Displacemet Method".JOURNAL OF HYDRODYNAMICS 19.5(2007):594-600.

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