Unraveling the role of vaporization momentum in self-jumping dynamics of freezing supercooled droplets at reduced pressures.

ABSTRACT: Supercooling of water complicates phase change dynamics, the understanding of which remains limited yet vital to energy-related and aerospace processes. Here, we investigate the freezing and jumping dynamics of supercooled water droplets on superhydrophobic surfaces, induced by a remarkable vaporization momentum, in a low-pressure environment. The vaporization momentum arises from the vaporization at droplet's free surface, progressed and intensified by recalescence, subsequently inducing droplet compression and finally self-jumping. By incorporating liquid-gas-solid phase changes involving vaporization, freezing recalescence, and liquid-solid interactions, we resolve the vaporization momentum and droplet dynamics, revealing a size-scaled jumping velocity and a nucleation-governed jumping

SUBMITTER: Yan X 

PROVIDER: S-EPMC10879204 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature