Modeling hydrodynamic slip via Taylor dispersion

Hydrodynamic slip is a ubiquitous phenomenon in systems with fluid-solid interfaces, and it is non-negligible when the slip length is not small compared to other length-scales of the problem. In this work, we present a model for hydrodynamic slip as a function of effective diffusivity that leverages the phenomenon of Taylor dispersion. We validate this model against extensive molecular dynamics (MD) simulations of Lennard-Jones chains of varying lengths. We close by highlighting the key advantages of this framework for slip, and we describe a quasi-predictive method for estimating slip at moderate-to-high fluid shear rates.