Droplet skirting occurs when a fluid droplet rolls over a bath of the same fluid without merging. To achieve skirting, we introduced a ~0.6 mm-diameter droplet of 1 cSt silicone oil into a bath of the same fluid by bouncing it off an angled glass slide coated with 100,000 cSt silicone oil. Our work suggests that initial skirting velocity increases as a function of slide angle and, to a lesser degree, droplet generator height. Furthermore, we conclude that the droplet lifetimes (initiation of skirting until rupture) and corresponding 𝜏 values (rate of decay of motion) appear consistent with theoretical predictions for such droplets based on previous research (which did not address >0.75 mm-diameter droplets.
Wilkerson, Ben; Mezaki, Nanami; and Hale, Jacob PhD, "Droplet Impact, Part 1: Controlling Skirting Velocity" (2021). Annual Student Research Poster Session. 74.