The evaporation of water droplet on various heated surfaces (smooth and textured walls) has been studied experimentally. The temperature field of the droplet surface has a more uniform distribution on a hydrophilic textured surface of substrate. During evaporation of water droplet on a hydrophobic wall, the temperature field is substantially inhomogeneous. Measurements in a vertical cross section of a droplet on a hydrophobic surface were done by the particle image velocimetry method. They reveal occurrence of a toroidal vortex flow in the liquid. The average velocity of free convective motion in a droplet decreases as the evaporation goes on. The maximum heat flux during droplet evaporation corresponds to a hydrophilic textured surface.
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S.Y. Misyura (2022) studied this question.
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