Abstract
We study the motion of liquid droplets moving along partially wettable fibers. Employing lattice Boltzmann simulations, we observe three dynamic regimes: compact droplet, droplet breakup, and droplet oscillation. The transitions between these regimes depend not only on the droplet Bond number but also on the fiber curvature. In particular, droplet breakup is promoted with increasing fiber curvature. Furthermore, we can identify different scaling laws for the droplet velocity when the droplet size is large or small compared to the fiber radius.
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