Full characterization of the hydrodynamic boundary condition at the atomic scale using an oscillating channel: Identification of the viscoelastic interfacial friction and the hydrodynamic boundary position

Omori, Takeshi; Inoue, Naoki; Joly, Laurent et al.

Physical Review Fluids, 2019, 4(11), 114201-1-114201-13

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Identifier to cite or link to this item: https://hdl.handle.net/11094/83323

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Title
Full characterization of the hydrodynamic boundary condition at the atomic scale using an oscillating channel: Identification of the viscoelastic interfacial friction and the hydrodynamic boundary position
Creator
NRID
1000070467546 1000070467546
CreatorName
Omori, Takeshi
CreatorName
Inoue, Naoki
CreatorName
Joly, Laurent
CreatorName
Merabia, Samy
NRID
1000030346192 1000030346192
ORCID
0000-0002-8000-8437 0000-0002-8000-8437
researchmap permalink
yasutaka_yamaguchi yasutaka_yamaguchi
Scopus Author ID
15849815900 15849815900
CreatorName
Yamaguchi, Yasutaka
Description
Omori T., Inoue N., Joly L., et al. Full characterization of the hydrodynamic boundary condition at the atomic scale using an oscillating channel: Identification of the viscoelastic interfacial friction and the hydrodynamic boundary position. Physical Review Fluids, 4(11), 114201. https://doi.org/10.1103/physrevfluids.4.114201.
Abstract
Flows in nanofluidic systems are controlled by the hydrodynamic boundary condition (BC), involving the friction coefficient and the hydrodynamic wall position. Here we considered a liquid nanoslab confined between two walls, where we derived, from the Stokes equation and the Navier slip BC, analytical expressions for the liquid response to an oscillatory tangential motion of the walls in terms of the wall shear stress and mean fluid velocity. By fitting these expressions to molecular dynamics simulation results, we could extract both the viscoelastic friction coefficient and hydrodynamic wall position for walls with three different wettabilities, hence fully characterizing the frequency-dependent hydrodynamic boundary condition. The proposed method could be applied to a variety of liquid-solid interfaces of interest, e.g., for flows of complex fluids or fluids at a low temperature. It should also support methodological developments on the characterization of the hydrodynamic slip in general.
Publisher
American Physical Society (APS)
Source Title
Physical Review Fluids
Volume (Issue)
4(11)
Page
114201-1-114201-13
Date of Issued
2019-11-01
Language
English
Handle URL
https://hdl.handle.net/11094/83323
eISSN
2469990X
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1103/physrevfluids.4.114201
Access Rights
open access
CopyRight
© 2019. Published by the American Physical Society. This article is licensed under a Creative Commons Attribution 4.0 International License.
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Category
学術雑誌論文 Journal Article