A numerical simulation of a droplet impacting a small superhydrophobic cylinder eccentrically

Droplet collisions on superhydrophobic cylindrical surfaces are widely seen in industrial applications. To investigate their dynamic behavior, numerical simulations of droplets impacting eccentrically the surface a small cylinder performed this work. The eccentricity e ranges from 0 to 1.2 mm, and impact velocity 0.5 2 m/s. effects studied detail. results show that increasing reduces maximum spreading factor exacerbates asymmetry azimuthal direction. When surface, two collision modes observed: an asymmetric stretching regime stretched rebound regime. formulation (Wecr/D∗=230ε+31) is employed as criterion distinguish between modes. With e, asymmetrical flow non-impact side occurs, accompanied by transition behavior bouncing. can effectively decrease contact time droplet resulting reduction up 32% during eccentric impact.