Scaling Law Breaking in Unequal-size Droplet Coalescence
arxiv(2024)
摘要
This Letter examines the coalescence of two unequal-size spherical liquid
droplets in the inviscid regime. We find that the liquid bridge evolution
exhibits a breaking from the classical 1/2 power-law scaling [Phys. Rev. Lett.
95, 164503 (2005)]. Employing an energy balance analysis, we attain a
theoretical model to collapse bridge evolution data of different droplet size
ratios. This model reveals an exponential dependence of the bridge's radial
growth on time, which is intrinsically scaling-free owing to the asymmetric
movement of the liquid bridge.
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