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Fluid inhomogeneity within nanoslits and deviation from Hagen-Poiseuille flow
Wang, Yuying1,2; Xu, Junbo1; Yang, Chao1,2
2017-02-01
Source PublicationAICHE JOURNAL
ISSN0001-1541
Volume63Issue:2Pages:834-842
Abstract

Recently, the deviation of nano-confined flows from classical hydrodynamic theories has been frequently reported. In this work, such a flow is theoretically investigated by means of dissipative particle dynamics (DPD) simulation. The simulation results show that the density and viscosity inhomogeneities near solid/fluid interfaces depends on the slit wettability only. Flow enhancement relative to the Hagen-Poiseuille (H-P) flow occurs together with the flow inhomogeneity. Combining of flow inhomogeneity and the Stokes equation, a theoretical model for flux calculation is established. As the slit being widened, the model can be simplified by gradually eliminating the higher order traces, and be simplified into the model with Navier's slip condition and the well-known H-P relation at last. The theoretical results of flux are in good agreement with the simulations by DPD. (c) 2016 American Institute of Chemical Engineers AIChE J, 63: 834-842, 2017

KeywordNanofluidics Nanoslit Hydrodynamics Dissipative Particle Dynamics Flux Model
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1002/aic.15409
Indexed BySCI
Language英语
WOS KeywordDissipative Particle Dynamics ; Carbon Nanotubes ; Simulation ; Water ; Slip ; Diffusion ; Pores
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding Organization973 Program(2012CB224806) ; National Natural Science Foundation of China(21490584 ; Major National Scientific Instrument Development Project(21427814) ; 91534105)
WOS IDWOS:000392844900034
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21888
Collection生化工程国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yuying,Xu, Junbo,Yang, Chao. Fluid inhomogeneity within nanoslits and deviation from Hagen-Poiseuille flow[J]. AICHE JOURNAL,2017,63(2):834-842.
APA Wang, Yuying,Xu, Junbo,&Yang, Chao.(2017).Fluid inhomogeneity within nanoslits and deviation from Hagen-Poiseuille flow.AICHE JOURNAL,63(2),834-842.
MLA Wang, Yuying,et al."Fluid inhomogeneity within nanoslits and deviation from Hagen-Poiseuille flow".AICHE JOURNAL 63.2(2017):834-842.
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