Journal
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume 93, Issue -, Pages 93-99Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2018.03.007
Keywords
Droplet evaporation; Contact angle; Wettability; Constant heat flux; Drop size
Categories
Funding
- National Natural Science Foundation of China [51506127]
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In this study, an experimental investigation has been carried out to study evaporation of sessile droplets with different volumes on a heating surface under constant heat flux conditions. In this experiment, two sessile droplets were placed on a hydrophilic and a hydrophobic heating surface side by side. The droplets size ranged from 2 mu l to 5 mu l, and heat flux ranged from 1272 W/m(2) to 7810 W/m(2). A high-speed camera was used to record the changing shapes of two sessile droplets. Effects of droplet size on dimensionless contact angle, dimensionless contact diameter, dimensionless droplet height and dimensionless evaporation rate, are presented.
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