Abstract
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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Acknowledgments
We gratefully acknowledge computational facilities provided by the UPPA. D. A. acknowledges the Conseil Regional d’Aquitaine for a post-doctoral grant. This work has been partially supported by a ERC advanced grant through the “Failflow” project.
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Ameur, D., Galliéro, G. Slippage of binary fluid mixtures in a nanopore. Microfluid Nanofluid 15, 183–189 (2013). https://doi.org/10.1007/s10404-013-1141-9
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DOI: https://doi.org/10.1007/s10404-013-1141-9