期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 652, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2022.129722
关键词
Fiber coalescence; Droplet coalescence; Droplet growth; High-speed photography
资金
- National Natural Science Foundation of China [21878099]
- Science and Technology Commission of Shanghai Municipality [19DZ1208000]
- Fundamental Research Funds for the Central Universities
In this paper, a micro experimental system and high-speed camera observation system were designed to explore the characteristics of fog droplet adhesion, coalescence and transmission. The study found different structural forms of droplets and their characteristics on fibers, providing a theoretical basis for the optimization and application of gas-liquid fiber coalescence.
The coalescence separation has been widely used in the industry for its high separation efficiency and the reduced separation pressure. In this paper, the micro experimental system and high-speed camera observation system were designed and the characteristics of fog droplet adhesion, coalescence and transmission were explored. The experimental results showed that after the fiber wetting, the growing droplets mainly contained two structural forms: shell-shaped droplets and rugby-shaped droplets. For single fiber coalescence, the limit value of the contact angle of rugby-shaped droplets were about 65 degrees when dfiber was 25.38 mu m. For fiber intersection coalescence, the droplet will maintain a nearly constant contact length d, about 6 mm to 8 mm. This paper provide background physics and insights of droplets coalescence mechanism for the further optimization and application of the gas-liquid fiber coalescent.
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