The no-slip condition for a mixture of two liquids

Details The no-slip condition for a mixture of two liquids The no-slip condition for a mixture of two liquids

1998-01-28

arxiv.org/abs/cond-mat/9801304v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, including 4 figures

Scientific paper

10.1103/PhysRevLett.80.5125

When a mixture of two viscous liquids flows past a solid wall there is an ambiguity in the use of the no-slip boundary condition. It is not obvious whether the mass-averaged velocity, the volume-averaged velocity, the individual species velocities, all or none of the above, or none of the above should exhibit no-slip. Extensive molecular dynamics simulations of the Poiseuille flow of mixtures of coexisting liquid species past an atomistic wall indicate that the velocity of each individual liquid species satisfies the no-slip condition and, therefore, so do mass and volume averages.

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