Electric wind characterisation in negative point-to-plane corona discharges in air
Electric wind characterisation in negative point-to-plane corona discharges in air
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DOI：
10.1051/epjap:2003006
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发表时间：
2003-04
影响因子：
1
通讯作者：
P. Béquin;K. Castor;J. Scholten
中科院分区：
文献类型：
--
作者：
P. Béquin;K. Castor;J. Scholten
在空气中点到面的电晕放电中，带电粒子与中性粒子的碰撞会在点到面之间产生一种称为电风的气体运动。首次建立了中性粒子沿放电轴和电极间速度的一维模型。利用激光多谱勒测速仪测量电极间气体的轴向速度分布。讨论了实验结果与轴上速度预测之间的差异。最后，测得的速度分布与cos 5θ分布符合得很好。在放电轴附近观察到测量的θ分布与CoS5的分布有很大差异，这可能归因于种子粒子的存在。
In point-to-plane corona discharges in air, the collisions of charged particles with neutral particles induce a gas movement between the point to the plane called electric wind. A one-dimensional model of the neutral particle velocity along the discharge axis and between the electrodes is first developed. Laser Doppler Anemometry is used to measure the axial velocity profile of the gas between the electrodes. Discrepancies between experimental results and predictions of the on-axis velocity are discussed. Finally, the measured velocity profile compares quite well with a cos 5 θ distribution. Significant differences between measured and cos 5 θ profiles are observed near the discharge axis which could be attributed to the presence of seeding particles.