Numerical simulation of evaporation and internal flow of substrate droplet under electric field

被引：0
|
作者：
Zhang T. [1 ]
Xu H. [1 ]
Wu T. [1 ]
Li B. [1 ]
Wang J. [1 ]
机构：
[1] School of Energy and Power Engineering, Jiangsu University, Zhenjiang
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 02期
关键词：
Droplet; Electric field; Electrohydrodynamics; Evaporation; Numerical simulation;
D O I：
10.16085/j.issn.1000-6613.2021-0677
中图分类号：
学科分类号：
摘要：
In order to study the principle of enhancing substrate droplet evaporation by electric field, the evaporation process of droplets on solid substrate under external electric field was numerically simulated by finite element method. The effect of electric field on the evaporation rate and internal flow of droplet and its reasons were analyzed by comparing cases of droplets with different electric conductivities. The relationship between the internal flow and heat and mass transfer of droplet was also analyzed. The results showed that the effect of electric field can significantly enhance the internal flow and promote the heat and mass transfer of droplets. In addition, the effect of electric field on droplet evaporation and internal flow was analyzed. It was found that the effect of temperature on the internal flow and evaporation of droplets is also obvious. For the pure water droplet with low conductivity, when the electric field intensity was lower than and higher than the critical value 6kV/cm, the effect of temperature on the internal flow and evaporation of electric field enhanced droplets was different, and for the HCl droplet with high conductivity, temperature has great influence on electric field enhanced droplet influx and evaporation. The current study provides a research foundation for the development of efficient electrostatic spray cooling technology. © 2022, Chemical Industry Press Co., Ltd. All right reserved.
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页码：609 / 618
页数：9
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