Evaporation of the Leidenfrost Droplet Located on a Thin Metal Foil

Abstract

For the thin metal foil cooling that is not very intense, the temperature change in thickness can be neglected when the Biot number Bi<0.1. In this way the problem has been treated as unsteady and one-dimensional, and solved numerically using MATLAB computational software. The results are given for the thin cylindrical copper foil of the radius of R=25 mm and different thickness ranging from 0.2 to 2.0 mm.In the case of the copper foil with a thickness h=0.2 mm at t=0.05 s, the temperature at the center decreases ∼3.3oC, while the rate of the temperature decrease is above 61.5 K/s and for higher foil thickness both values are significantly lower.