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http://dx.doi.org/10.5407/JKSV.2017.15.2.021

Investigation of Internal Flow Fields of Evaporating of Binary Mixture Droplets  

Kim, Hyoungsoo (Department of Mechanical Engineering, KAIST)
Publication Information
Journal of the Korean Society of Visualization / v.15, no.2, 2017 , pp. 21-25 More about this Journal
Abstract
If a liquid droplet evaporates on a solid substrate, when it completely dries, it leaves a peculiar pattern, which depends on the composition of the liquid. Not only a single component liquid but also complex liquids are studied for a different purpose. In particular, a binary mixture droplet has been widely studied and used for an ink-jet printing technology. In this study, we focus on investigating to visualize the internal flow field of an ethanol-water mixture by varying a concentration ratio between two liquids. We measure the in-plane velocity vector fields and vorticities. We believe that this fundamental study about the internal flow field provides a basic idea to understand the dried pattern of the binary mixture droplet.
Keywords
Particle Image Velocimetry; Binary mixture droplet; Evaporation;
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