A new device for monitoring deformation dynamics and droplet shrinkage kinetics (during drying) of a charged droplet suspended in air

IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
A. Dokmak , T. Deleau , J.J. Letourneau , A. Maudhuit , P. Arlabosse , M.I. Ré
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引用次数: 0

Abstract

In this study, a new device was developed to study the deformation kinetics of a pendant droplet under controlled drying conditions and in the presence of an electric field (EF). It has made it possible to investigate the deformation and air-drying kinetics of conductive and electrically charged pendant CuSO4.5H2O droplets. Various EF intensities (0–800 kV/m) and solid content concentrations (0–25 % wt/wt) are applied. Results show significant reduction (up to 42 %) in interfacial tension with increasing EF, along with a quadratic relationship between EF intensity and interfacial tension. Droplet surface area expansion and deformation are influenced by the EF intensity and the solution solids content. It has also been shown that, during drying, EF application can influence the deformation kinetics and shrinkage rate during the early drying stages, particularly at higher solid concentrations and high EF intensity, revealing new insights into droplet dynamics under EF.

Abstract Image

一种监测悬浮在空气中的带电液滴的变形动力学和液滴收缩动力学(在干燥过程中)的新装置
在这项研究中,开发了一种新的装置来研究在受控干燥条件下和电场(EF)存在下悬垂液滴的变形动力学。这使得研究导电和带电悬垂CuSO4.5H2O液滴的变形和风干动力学成为可能。应用各种EF强度(0-800 kV/m)和固体含量浓度(0 - 25% wt/wt)。结果表明,界面张力随着EF的增加而显著降低(高达42%),并且EF强度与界面张力之间呈二次关系。射流强度和固相含量对液滴表面积的扩展和变形有影响。研究还表明,在干燥过程中,EF的施加会影响干燥初期的变形动力学和收缩率,特别是在高固体浓度和高EF强度下,这为研究EF作用下的液滴动力学提供了新的见解。
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来源期刊
Journal of Electrostatics
Journal of Electrostatics 工程技术-工程:电子与电气
CiteScore
4.00
自引率
11.10%
发文量
81
审稿时长
49 days
期刊介绍: The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas: Electrostatic charge separation processes. Electrostatic manipulation of particles, droplets, and biological cells. Electrostatically driven or controlled fluid flow. Electrostatics in the gas phase.
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