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arXiv 1202.4613physics.plasm-ph
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atmospheric pressure中丝-柱-板正电晕放电的数值模拟

Simulation of a wire-cylinder-plate positive corona discharge in nitrogen gas at atmospheric pressure

Alexandre A. Martins

摘要:

在这项工作中,我们将执行一个模拟的线柱板正电晕放电在氮气中,并比较我们的结果与已经发表的实验结果在空气中相同的结构。我们选择模拟这种创新的几何形状,因为已经通过实验确定,它可以产生高达0.35 N/m的每单位电极长度传输到气体的推力,并且还能够在空气中诱导8-9 m/s范围内的离子风顶部速度。在我们的模型中,所使用的离子源是一个小直径的导线,它产生一个积极的电晕放电在氮气直接到接地电极,之后,所产生的正离子进一步加速在地面和阴极之间的加速通道。通过应用流体动力学和静电理论,将计算作用在所考虑的几何形状上的所有流体动力学和静电力,以试图从理论上确认所产生的离子风轮廓以及每单位电极长度的推力。这些结果是重要的,以建立这种模拟工具的有效性,为今后的研究和开发这种效果的实际目的。

英文摘要:

In this work we are going to perform a simulation of a wire-cylinder-plate positive corona discharge in nitrogen gas, and compare our results with already published experimental results in air for the same structure. We have chosen to simulate this innovative geometry because it has been established experimentally that it can generate a thrust per unit electrode length transmitted to the gas of up to 0.35 N/m and is also able to induce an ion wind top velocity in the range of 8-9 m/s in air. In our model, the used ion source is a small diameter wire, which generates a positive corona discharge in nitrogen gas directed to the ground electrode, after which the generated positive ions are further accelerated in the acceleration channel between the ground and cathode. By applying the fluid dynamic and electrostatic theories all hydrodynamic and electrostatic forces that act on the considered geometries will be computed in an attempt to theoretically confirm the generated ion wind profile and also the thrust per unit electrode length. These results are important to establish the validity of this simulation tool for the future study and development of this effect for practical purposes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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