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 provid...

中文翻译：

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针电极配置中电晕放电的混合方法：在大空间中

针状电极由于效率高而被广泛用作带电粒子产生装置中的放电电极以研究放电特性。但是，对于针电极的电晕放电在大空间（数十乃至数百厘米）中的带电粒子分布，仍然缺乏有效的数值模拟方法。为了解决这一问题，本文提出了一种基于流体动力流体模型和离子流输运方程（基于Kaptzov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，使用两种类型的球体（半径25 cm）设备在各种施加电压下进行数值模拟和一系列实验的良好一致性，通过比较带电粒子的密度和放电电流，已经证明了混合方法的准确性和可行性。这项研究提供了...