Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 30, 2018 - November 01, 2018
Droplet impact on high-temperature wall can be seen in a spray cooling to heated steel. Impacting droplets can levitate when the wall has sufficiently high temperature. This levitating phenomenon of a droplet is called the Leidenfrost effect. Many researches have been conducted to investigate the conditions of occurrence of the Leidenfrost effect. It is reported that a wettability of the wall and an impact velocity of droplets have affected the occurrence of the Leidenfrost effect. However, the detailed mechanism of the Leidenfrost effect is still poor understood. In this study, we used the molecular dynamics (MD) simulation to investigate the mechanism of the levitating phenomenon of impacting nanodroplet. We found that evaporation from in the vicinity of the three-phase contact line may affect the levitation of nanodroplet.
