Synergistic effects of geometry, inertia, and dynamic contact angle on wetting and dewetting of capillaries of varying cross sections

► Integrated Navier-Stokes equation is used for uniform and sinusoidal capillaries. ► Inertia and dynamic contact angle have opposing effects on capillary flow. ► Nonuniform geometry significantly affects the kinetics of capillary flow. ► Nonuniform geometry induces wetting/dewetting hysterisis. ► Wettability decrease amplifies the effects of nonuniform geometry.