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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50267


    Title: The effect of vibrating conditions on the electrostatic charge in a vertical vibrating granular bed
    Authors: Liao,CC;Hsiau,SS;Huang,TY
    Contributors: 機械工程學系
    Keywords: TRIBO-CHARGE;PARTICLE;ELECTRIFICATION;POWDERS;SYSTEMS;FLOW;GENERATION;HUMIDITY;IMPACT;SIZE
    Date: 2011
    Issue Date: 2012-03-27 17:08:06 (UTC+8)
    Publisher: 國立中央大學
    Abstract: In this study, we carried out experiments to measure the electrostatic charge of a granular matter in a vertical shaker device. The purpose was to quantify the effect of the vibrating conditions on electrostatic charging in the granular matter. In each experimental run, 3 mm glass beads were first discharged to remove any residual charge prior to subsequently studying their electrostatic charging. The accumulative electrostatic charges of the granular materials were measured using a Faraday cage. The findings show that the vibrating conditions play an important role in the saturated electrostatic charge and time constant. The electrostatic charges of granular materials are mainly generated by the contact potential difference mechanism in the vibrating granular system. The results show that the saturated accumulation charge increases as the dimensionless vibrating acceleration increases, and decreases with increasing vibrating frequency. The time constant is small when a higher vibrating frequency is applied in the vibrating granular system. Finally, we demonstrate that the saturated accumulation charge increases linearly with the increase of the dimensionless vibrating velocity regardless of the vibrating frequency. (C) 2010 Elsevier B.V. All rights reserved.
    Relation: POWDER TECHNOLOGY
    Appears in Collections:[機械工程學系] 期刊論文

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