Inertial effects in local evaporation-induced fluid flow near a pinned contact line.

Numerous studies of evaporation near contact lines where solid substrates and liquid-gas interfaces meet, have been conducted over the past few decades. We consider a single, circular dry patch in an evaporating liquid layer on a flat heated substrate. The process of evaporation induces both diffusion of vapor and moist air flow, which in turn govern the trajectories of microscale liquid droplets near the contact line. Previous studies analyzed both the flow and the trajectories using the Stokes flow approximation. We investigate how inertial effects influence the viscous flow near the contact line and analyze how these modifications affect the trajectories of the droplets. A parametric study of droplet trajectories directed toward the dry patch is performed.