典型文献
Equilibrium charge and triboelectric coefficient of spheres in a rotating container
文献摘要：
Contact electrification occurs in many granular material systems due to particle-particle and particle-wall contacts.In this paper,we used a simple device to characterize the electrification of different spheres in a rotating spherical container.The charge of the spheres was quantified by a Faraday cup after rotating for various time and the disperse behaviors of charged spheres were recorded by a camera.The effects of the rotational time,sphere size,rotational speed,sphere material,and relative humidity on the equilibrium charge and triboelectric coefficient were analyzed.The results show that the equilibrium surface charge density is independent of the sphere size and the rotating speed,whereas the larger rotating speed enhances the triboelectric coefficient.It is also shown that charge relaxation constants are two orders of magnitude lower than the charge generation constants for all spheres at a low relative humidity.The increase of water molecules in the air was found to result in the decline of charge generation constant and the rise of charge relaxation constant,which together cause the decrease of the equilibrium surface charge density.
文献关键词：
中图分类号：
作者姓名：
Jiawei Hu;Cai Liang;Qun Zhou;Jiliang Ma
作者机构：
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing 210096,China
文献出处：
引用格式：
[1]Jiawei Hu;Cai Liang;Qun Zhou;Jiliang Ma-.Equilibrium charge and triboelectric coefficient of spheres in a rotating container)[J].颗粒学报（英文版）,2022(04):103-111
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B类：
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AB值：
0.492862
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