Abstract
The impact dynamic behavior of rainwater and the subsequent freezing process on the transmission line cause significant damage to the power grid. Therefore, a good understanding of the droplet impact and freezing process on a subcooled superhydrophobic surface under an electric field is crucial. In this study, the dynamic behavior of a droplet impacting a subcooled superhydrophobic surface at various surface temperatures and electric field strengths was visually studied. Moreover, the influence of the surface temperature and electric field strength on the contact time, maximum spread factor, rebound mode, and nucleation rate were investigated. Furthermore, the variation in rebound modes with electric field strength and surface temperature was clarified in the phase diagram. Eventually, the nucleation rate exponentially increases with an increase in the electric field strength and a decrease in the surface temperature. This study can aid in the anti-icing design of power grid systems.
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