Prediction of fluid velocity slip at solid surfaces

Jesper Schmidt Hansen, Billy Todd, Peter Daivis

Publikation: Bidrag til tidsskriftTidsskriftartikelpeer review

Abstract

The observed flow enhancement in highly confining geometries is believed to be caused by fluid velocity slip at the solid wall surface. Here we present a simple and highly accurate method to predict this slip using equilibrium molecular dynamics. Unlike previous equilibrium molecular dynamics methods, it allows us to directly compute the intrinsic wall-fluid friction coefficient rather than an empirical friction coefficient that includes all sources of friction for planar shear flow. The slip length predicted by our method is in excellent agreement with the slip length obtained from direct nonequilibrium molecular dynamics simulations.
OriginalsprogEngelsk
TidsskriftPhysical Review E (Statistical, Nonlinear, and Soft Matter Physics)
Vol/bind84
Udgave nummer1
Antal sider8
ISSN1539-3755
DOI
StatusUdgivet - 2011

Citer dette