Journal
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume 115, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2020.104600
Keywords
Droplet evaporation; Constant heat flux; Marangoni convection; Hydrothermal wave
Categories
Funding
- National Natural Science Foundation of China [51976127, 51506127]
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Droplet evaporation is a common physical phenomenon, widely used in the life, science, industry and other fields. During evaporation of the droplets, the surface tension changes due to the non-uniformity of vapor-liquid interface temperature, and the Marangoni convection is generated. Previous studies mainly focused on constant wall temperature condition, but less on constant heat fluxes condition. In this paper, a 5 mu l R113 sessile droplet evaporated on a hydrophilic heating surface with a constant heat flux ranging from 0 similar to 3575W/m(2) was studied. A high-speed camera and an infrared camera were used to record the dynamic characteristics of the droplet evaporation phenomenon in the horizontal and vertical directions respectively. The Marangoni phenomenon of losing stability, evaporation time, the dynamic contact angle, the number of ripples, cell body diameter were present in this paper.
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