The present paper reports simulation-based investigations of electric field distributions in different geometrical configurations of the corona electrode. Previously, various corona electrode arrangements have been used in the literature for uniform corona aging of insulating samples. However, to date, no conclusive comparative study has been performed to choose the best corona electrode design that would result in a uniform electric field distribution. So, in the present study, simulation investigations have been carried out using Finite Element Methods (FEM) to explore the impact of corona discharges that affect the electric field distribution at various gap spacings between the HV and GND electrodes. An understanding of the effect of such conditions that leads to the intensification of the electric field is needed to better design the corona electrode for experimental purposes. The effect of the electric field distribution in the vicinity of the corona-treated insulating surface is developed. This study provides information on the selection of the best-suited electrode design to achieve a homogeneous electric field.
To investigate the influence of electrode surface roughness on gas discharge characteristics under micro-gap conditions, direct-current breakdown experiments were carried out in atmospheric air using a nano-positioning system. Breakdown tests were conducted for five metal electrodes over the electrode gap distances fro...
Xiao-Yang Li, Yan-Zhou Sun, Jia-Hao Zhi et al.· Journal of the Physical Soci...· 0 citations
Corona discharge has been extensively adopted for plasma generation, but its practical application is constrained by discharge uniformity and operational stability. In this study, numerical simulations are performed to explore the enhancement mechanism of external magnetic fields on corona discharge, with a focus on th...
The determination of transient changes in bulk resistance under applied electric fields is essential for evaluating surface conductivity in dielectric materials. Theoretical approaches can provide valuable insights into voltage propagation by analyzing temporal variations in the bulk response. However, due to the lack...
Manuel Rivas, Lourdes Franco, L. D. Del Valle· Journal of Materials Researc...· 0 citations
In previous theoretical studies of vacuum surface flashover, zero-dimensional models were typically employed. It was assumed that only the applied electric field existed tangentially along the insulator surface, and the positive charges deposited on the dielectric surface were uniformly distributed along the tangential...
La-Qun Liu, Ye Dong, Hui-Hui Wang et al.· Plasma Sources Science & Tec...· 0 citations
Discussed are one-dimensional and two-dimensional cases of potential distribution in electrode. It is demonstrated that if the rate of current formation in each point of electrode was (according to Faraday's law-) proportional to transferred electrical charge as well as to deviation of potential from equilibrium potent...
A. S. Shvetsov· Electrochemical Energetics· 0 citations
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