| 초록 |
Evaporation is a common phenomenon in everyday life. However, most studies have been done on the evaporation of a small sessile drop, and a systematic approach to the evaporation rate of a heavy drop is insufficient. The shape of a droplet is determined by the relative effects of gravity and surface tension. When gravity dominates surface tension, a drop on a substrate looks like a pancake shape called puddle. On the other hand, when surface tension dominates gravity, a drop on a substrate looks like a spherical cap. The two relative forces are represented by the dimensionless number Bo. In this study, drop profile and evaporation rate of viscous liquid changing from a puddle to a small drop by the evaporation is calculated by Mathematica and compared with experimental data. The results are expected to help understand evaporation on the general surface of the industry. |
