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.
Source PublicationJOURNAL OF HYDRODYNAMICS
2007
Volume19Issue:5Pages:594-600
ISSN1001-6058
AbstractNano-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.
KeywordNano-liter Flowrate Measurement Hagen-poiseuille (Hp) Formula Displacement Method Capillarity Force
DOI10.1016/S1001-6058(07)60158-9
Indexed BySCI
Language英语
WOS IDWOS:000208248100009
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational Natural Science Foundation of China [10272107] ; Chinese Academy of Sciences [KJCX2-SW-L2]
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58454
Collection力学所知识产出(1956-2008)
Corresponding AuthorGuo, Q (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
Recommended Citation
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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