Abstract

The volume of fluid technique was used to investigate the impact of hollow and dense droplets colliding on a polygonal surface. The dynamic behavior of colliding droplets on the surface, as well as colliding droplet shape and jet fluid characteristics, were studied. A dense droplet has a diameter of 5.25 mm, whereas a hollow droplet has a diameter of 5.25 mm outer diameter and 4 mm inner diameter. The fluid has Newtonian properties, is incompressible, and has a laminar nature. Because the dense droplet has more fluid volume and mass than the hollow droplet, it can spread faster and thicker across the surface. At 4.2 ms after impact, the counter jet reaches a maximum height of 11.14 mm in case 3, and a minimum height of 4.5 mm in case 2 at 5 ms.