Measurements and Simulations of the Ionic wind Produced by a DC Corona Discharge in Air, Helium and Argon
Measurements and Simulations of the Ionic wind Produced by a DC Corona Discharge in Air, Helium and Argon
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DOI：
10.2514/6.2007-4611
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发表时间：
2007-06
期刊：
影响因子：
--
通讯作者：
P. Bérard;D. Lacoste;C. Laux
中科院分区：
文献类型：
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作者：
P. Bérard;D. Lacoste;C. Laux
本文对大气中两平行导线间直流电晕放电产生的离子风进行了参数研究。实验旨在研究电极之间的差距距离、导线直径、电极的材料和极性、气体的类型、电压和电流的影响。正放电时电流稳定，负放电时电流呈脉冲状（Trichel脉冲）。电极表面的状态（但不是它们的材料）确实对离子风有影响。验证了离子风随电流平方根变化的解析预测。在我们的实验范围内，要使离子风达到最大，电极间距必须最小，电极直径不对称度必须最大。提出了一个模型来模拟我们的实验装置的离子风。简化的空气化学的结果与测量结果符合得很好。
A parametric study of the ionic wind produced by a DC corona discharge between two parallel wires in atmospheric air is presented. The experiment intends to examine the effect of the gap distance between the electrodes, the wire diameters, the material and the polarity of the electrodes, the type of gas, the voltage and the current. The current is steady for the positive discharge and pulsed (Trichel pulses) in the negative one. The state of the surface of the electrodes (but not their material) does have an effect on the ionic wind. We verified the analytic prediction that the ionic wind varies as the square root of the current. In our experimental ranges, to maximize the ionic wind, the distance must be the smallest, the electrode diameter dissymmetry the largest. A model is proposed to simulate the ionic wind for our experimental setup. The results with simplified air chemistry are in good agreement with the measurements.