Presentazioni e Articoli Tecnici

The quality of coatings obtained by means of thermal spraying depends strongly on the mechanism of the interaction between the molten droplets and the surface to be covered. The aim of the present study is to simulate the impact of a droplet onto a substrate, in order to have a good understanding of the dynamics of droplets impact. In this study, the process of droplet spreading is described; the effect of impact velocity on the dynamic of impact is studied with a wide range of wettability. The pressure, velocity and spreading factor during the droplet spreading are reported. Finite elements analysis using the COMSOL Multiphysics is used in this simulation. The results obtained are in excellent agreement with previously published results, experimentally and theoretically.