Cleaning performance of an electrodynamic dust shield under low-frequency vibrations

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL Powder Technology Pub Date : 2025-02-25 DOI:10.1016/j.powtec.2025.120845

Ryudai Nitano , Shunsuke Mitsunaga , Shuntaro Yamato , Kosuke Tanaka , Hiroshi Kanamori , Masato Adachi

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Abstract

Dust mitigation is one of the most critical challenges in lunar exploration activities, and an electrodynamic dust shield (EDS) has been developed as a promising technology for dust removal. This paper presents an investigation combining an EDS with the assistance of low-frequency vibrations. Cleaning experiments were conducted on size-sorted particles of the lunar-regolith simulant using an EDS system mounted on vibrating stages, where the vibration frequency, amplitude, strength, and direction could be varied. Experimental results revealed that the assistance of horizontal vibration combined with the electrostatic force led to higher removal efficiencies for small- and medium-sized particles (with diameters less than 25 μm, in the range 50–75 μm, respectively). The horizontal vibration caused the rotational motion of aggregates of small- and medium-sized particles, enhancing their transport by the electrostatic traveling wave. The vibration itself was the dominant force that contributed to cleaning of the larger particles with diameters of 250–500 μm. Increasing the vibration intensity improved removal efficiency.

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电动防尘罩在低频振动下的清洁性能

减尘是月球探测活动中最关键的挑战之一，电动力防尘罩（EDS）是一种很有前途的降尘技术。本文提出一种结合能谱仪和低频振动辅助的研究方法。利用安装在振动台上的能谱仪对模拟月壤颗粒进行了清洗实验，振动台上的振动频率、振幅、强度和方向都可以改变。实验结果表明，在水平振动和静电力的共同作用下，对粒径小于25 μm和粒径在50 ~ 75 μm之间的中小粒径颗粒的去除效率更高。水平振动引起了中小颗粒聚集体的旋转运动，增强了它们通过静电行波的输运。对于直径为250 ~ 500 μm的较大颗粒，振动本身是主要的清洁力。增加振动强度可以提高去除效率。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.

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