On the Effect of Viscosity Relaxation on Electromagnetic Radiation Intensity of an Oscillating Charged Droplet

IF 1.4 4区化学 Q4 CHEMISTRY, PHYSICAL

Colloid Journal Pub Date : 2023-10-04 DOI:10.1134/S1061933X23700199

A. I. Grigor’ev, N. Yu. Kolbneva, S. O. Shiryaeva

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Abstract

Theoretical asymptotic calculations linear with respect to small dimensionless amplitude of oscillations have been employed to study the influence of the viscoelastic properties of a charged droplet of an electrically conducting viscous liquid on the intensity of its electromagnetic radiation. It has been shown that allowance for the effect of viscosity relaxation leads to a decrease in the damping decrement value, which is determined by energy losses for electromagnetic wave emission, and the intensity of high-frequency electromagnetic radiation; a substantial reduction in the viscous damping decrement of small cloud droplets; and an essential dependence of the viscous damping decrement on the characteristic relaxation time. It has been found that the viscosity relaxation of a liquid has no significant effect on damped capillary oscillations and electromagnetic radiation of rain droplets. Viscoelasticity and viscosity of the liquid do not influence the conditions critical for the realization of the electrostatic instability of a droplet with respect to its own charge.

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粘性弛豫对振荡带电液滴电磁辐射强度的影响

采用关于小无量纲振荡振幅的线性理论渐近计算，研究了导电粘性液体带电液滴的粘弹性性质对其电磁辐射强度的影响。研究表明，考虑到粘度弛豫的影响，阻尼衰减值减小，阻尼衰减由电磁波发射的能量损失和高频电磁辐射的强度决定；小云滴的粘性阻尼衰减显著降低；以及粘性阻尼衰减率对特征弛豫时间的本质依赖性。研究发现，液体的粘度弛豫对阻尼毛细管振荡和雨滴的电磁辐射没有显著影响。液体的粘弹性和粘度不影响实现液滴相对于其自身电荷的静电不稳定性的关键条件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Colloid Journal 化学-物理化学

CiteScore

2.20

自引率

18.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of chemical science dealing with the disperse state of matter and surface phenomena in disperse systems. The journal covers experimental and theoretical works on a great variety of colloid and surface phenomena: the structure and properties of interfaces; adsorption phenomena and structure of adsorption layers of surfactants; capillary phenomena; wetting films; wetting and spreading; and detergency. The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface.