重新审视静电力对沙尘暴中沙粒扬起的影响

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics Pub Date : 2023-12-08 DOI:10.1016/j.elstat.2023.103880

Huan Zhang

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引用次数: 0

摘要

我们推导出了导电和绝缘沙粒在外加电场下的流体阈值理论公式。我们的分析表明，流体阈值与颗粒直径、外加电场和表面电荷密度存在非单调依赖关系。对于导电颗粒，静电力导致流体阈值降低达 31%。相反，对于带负电荷的绝缘粒子，静电力可将流体阈值提高 76%。意想不到的是，静电力会增强或抑制流体阈值达 30%，具体取决于外加电场和表面电荷密度。

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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Revisiting the effects of electrostatic forces on the lifting of sand particles in dust storms

We derived theoretical formulations for the fluid threshold of conducting and insulating sand particles under an imposed electric field. Our analysis reveals a non-monotonic dependency of the fluid threshold on particle diameter, imposed electric field, and surface charge density. For conducting particles, electrostatic forces lead to a reduction of the fluid threshold by up to 31%. In contrast, for negatively charged insulating particles, electrostatic forces enhance the fluid threshold by up to 76%. Unexpectedly, electrostatic forces either enhance or inhibit the fluid threshold by up to 30%, depending on the imposed electric field and surface charge density.

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来源期刊

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

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.