Evaporation of the Leidenfrost Droplet Located on a Thin Metal Foil
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- 作者：Tadeusz Orzechowski ; todek@tu.kielce.pl" class="auth_mail" title="E-mail the corresponding author ; Sylwia Wciślik
- 关键词：evaporative cooling ; Leidenfrost droplet evaporation ; numerical study
- 刊名：Procedia Engineering
- 出版年：2016
- 出版时间：2016
- 年：2016
- 卷：157
- 期：Complete
- 页码：131-138
- 全文大小：454 K
文摘
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.