Abstract
By building surface microstructures with coatings and simultaneously reducing surface energy to make them superhydrophobic, the contact time of ice or water on the surface can be reduced, thus achieving anti-icing or delayed icing effects. Existing studies have mainly investigated the effect of the roughness of superhydrophobic surfaces on the anti-icing effect from a macroscopic perspective. In order to study the dynamic bouncing behavior and microscopic mechanism of droplets on superhydrophobic surfaces with different microstructures, this paper adopts the lattice Boltzmann method (LBM) to investigate the collisional bouncing process of droplets on four kinds of surfaces: perfectly smooth, perfectly regular, randomly regular and randomly rough. The differences of droplet bouncing behaviors on superhydrophobic surfaces with different microstructures are compared and summarized, and the maximum diffusion diameter and contact time in the droplet bouncing process are analyzed to lay the foundation for anti-icing and frosting applications on superhydrophobic surfaces.
Published Version
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