The Effect of the Initial State of the Droplet Group on the Energy Conversion Efficiency of Self-Propelled Jumping

Langmuir : the ACS Journal of Surfaces and Colloids
Zhiping YuanXiaomin Wu

Abstract

The essential characteristic of the self-propelled jumping droplet is the jumping velocity, which determines its application value in heat transfer enhancement, antifrosting, self-cleaning, and so on. The jumping velocity is directly related to the energy conversion efficiency (i.e., the ratio of jumping kinetic energy surface energy released by coalescence to surface energy released by coalescence) and it is affected by the initial state of droplets but there is no unified theory to describe the relationship between the initial state of droplets and the energy conversion efficiency. In this paper, the projection of the initial chemical potential and the final chemical potential difference of droplets in the direction of jumping is defined as jumping potential by theoretical analysis of the chemical potential evolution. The effects of droplet number, distribution, and radius ratio on energy conversion efficiency can be synthetically characterized by jumping potential. The larger the jumping potential is, the higher the energy conversion efficiency is. Finally, the rationality and universality of the jumping potential are verified by numerical simulations and comparison with previous studies. The jumping potential can explain ph...Continue Reading

References

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Oct 27, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Fuqiang ChuXiaomin Wu

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Citations

Oct 31, 2020·Chemical Communications : Chem Comm·Xianchen LiuZhiguang Guo
Jan 1, 2021·Journal of Colloid and Interface Science·Zhiping YuanXiaomin Wu
Aug 11, 2021·ACS Applied Materials & Interfaces·Lifei HeFeng Liu
Jul 22, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Qi PengNenad Miljkovic
Jan 15, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Chuntian LiuClarence Augustine T H Tee

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