Evaporation of acoustically levitated bicomponent droplets: mass and heat transfer characteristics

Evaporation of multicomponent droplets is important in a wide range of applications, albeit complex, and requires a careful investigation. We experimentally and numerically investigate the evaporation characteristics of spherical, ethanol-water droplets with different initial concentration ratios in...

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Bibliographic Details
Published in:arXiv.org 2024-02
Main Authors: Wakata, Yuki, Chao, Xing, Sun, Chao, Diddens, Christian
Format: Article
Language:English
Subjects:
Acoustic levitation
Droplets
Ethanol
Evaporation
Heat transfer
Imaging techniques
Infrared imaging
Mathematical models
Parameter modification
Sound fields
Temperature distribution
Water drops
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Summary:Evaporation of multicomponent droplets is important in a wide range of applications, albeit complex, and requires a careful investigation. We experimentally and numerically investigate the evaporation characteristics of spherical, ethanol-water droplets with different initial concentration ratios in the acoustic levitation field. Imaging techniques and infrared thermometry are used for acquiring volume and surface temperature variations of droplets, reflecting their mass and heat transfer characteristics. Numerical simulations are conducted using modified parameters based on a theoretical model to consider the effect of the acoustic field. The calculation results show good agreement with the experimental data. The concentration and temperature distribution within the droplet is further investigated based on the numerical results.
ISSN:2331-8422