Journal
MICROFLUIDICS AND NANOFLUIDICS
Volume 15, Issue 2, Pages 183-189Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10404-013-1141-9
Keywords
Molecular dynamics; Nanopore; Slip boundary conditions; Mixtures
Funding
- ERC
- Conseil Regional d'Aquitaine
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This work focuses on the slip phenomenon at the fluid-solid interface accompanying Poiseuille flow of simple binary miscible fluids in a slit nanopore. To explore such flows, molecular dynamics simulations are used on Lennard-Jones binary mixtures composed of species of varying affinities with the walls. The results have shown that the apparent slip magnitude at the fluid-solid interface depends largely on the species that is dominant in contact with the walls. In addition, it has been shown that the velocity profiles of each species (of different wettability) does not superpose with the velocity profile of the mixture and such a result points out the limitations of the classical approaches based on a single momentum conservation equation to deal with mixtures flow in nanochannels.
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