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首页> 外文期刊>Plasma Sources Science & Technology >A hybrid approach for corona discharge in needle electrode configuration: in a largescale space
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A hybrid approach for corona discharge in needle electrode configuration: in a largescale space

机译：针电极配置中的电晕放电混合方法：大规模空间

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摘要

Needle electrodes are widely used as the discharge electrode in charged particle-generating apparatus to study discharge characteristics due to their high efficiency. However, for the charged particle distribution of needle electrode corona discharge in a large-scale space (tens or even hundreds of centimeters), there is still a lack of an effective numerical simulation method. To solve this problem, a hybrid approach based on the combination of a hydrodynamic fluid model and an ion flow transport equation (ion drift model, based on the Kaptzov hypothesis) is put forward in this paper. The principle and implementation of the proposed method is introduced in detail. Further, the good consistency of the numerical simulation and a series of experiments under various applied voltages with two type sphere (radius 25 cm) apparatus, by comparing the charged particle density and discharge current, has demonstrated the accuracy and feasibility of the hybrid approach. This research provides an approach for the further study of corona discharge in a large-scale space, and implies the precise control potential in the application of low-temperature plasma, such as plasma material treatment, water treatments, gas disposal and so on.
机译：针电极由于其高效率，被广泛用作带电粒子发生装置中的放电电极来研究放电特性。然而，对于针状电极电晕放电在大尺度空间（几十甚至几百厘米）内的带电粒子分布，仍然缺乏有效的数值模拟方法。为了解决这个问题，本文提出了一种基于流体动力学模型和离子流传输方程（基于卡普佐夫假设的离子漂移模型）相结合的混合方法。详细介绍了该方法的原理和实现。此外，通过比较带电粒子密度和放电电流，在两种类型的球体（半径25cm）装置上，数值模拟和不同外加电压下的一系列实验具有良好的一致性，证明了混合方法的准确性和可行性。本研究为进一步研究大尺度空间电晕放电提供了一种途径，并暗示了低温等离子体在等离子体材料处理、水处理、气体处理等应用中的精确控制潜力。

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    Li Chuan; Liu Zhi; Wang Pengyu; Zhang Ming; Yang Yong; Yu Kexun;

  • 作者单位

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical Engineering and Electronics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China;

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical Engineering and Electronics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China;

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical Engineering and Electronics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China;

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical Engineering and Electronics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China;

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical Engineering and Electronics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China;

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical Engineering and Electronics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 等离子体物理学;
  • 关键词

    numerical simulation; corona discharge; large scale space; needle electrode;

    机译：数值模拟;电晕放电;大规模空间;针电极;

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