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Abstract <p>This study delineates an exhaustive examination of a coaxial direct current corona discharge manifesting under arid atmospheric conditions at standard atmospheric pressure. The geometric parameters and operational conditions display analogies to those conventionally observed in electrostatic precipitators employing a wire-to-plate configuration. The inner electrode is distinguished by a radius of 100 μm, whereas the inter-electrode separation is consistently maintained at 10 cm. The simulations conducted pertain to steady-state conditions, wherein the discharge is perpetuated by the application of a voltage of 45 kV to the inner electrode, with the outer electrode held at ground potential. The influence of the reduction of the inter-electrode distance within the range of approximately 10, 8, 6 cm, and ultimately 4 cm was investigated and the corresponding results were presented. A central emphasis of this inquiry is the generation and transportation of charged particles, along with the ramifications of such phenomena on the current-voltage characteristics of the discharge.</p>

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A Comparative Investigation of the Effect of an External Electric Field on the Generation of Negative Corona Discharge Plasma in Air with the Application of Finite Element Analysis

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • E. Poorreza

摘要

Abstract

This study delineates an exhaustive examination of a coaxial direct current corona discharge manifesting under arid atmospheric conditions at standard atmospheric pressure. The geometric parameters and operational conditions display analogies to those conventionally observed in electrostatic precipitators employing a wire-to-plate configuration. The inner electrode is distinguished by a radius of 100 μm, whereas the inter-electrode separation is consistently maintained at 10 cm. The simulations conducted pertain to steady-state conditions, wherein the discharge is perpetuated by the application of a voltage of 45 kV to the inner electrode, with the outer electrode held at ground potential. The influence of the reduction of the inter-electrode distance within the range of approximately 10, 8, 6 cm, and ultimately 4 cm was investigated and the corresponding results were presented. A central emphasis of this inquiry is the generation and transportation of charged particles, along with the ramifications of such phenomena on the current-voltage characteristics of the discharge.