论文标题
直流驱动的阳式彩冠气流
DC-driven positive streamer coronas in airflow
论文作者
论文摘要
提出了层流气流对针对板的几何形状中阳性自动式流媒体冠的影响的实验研究。实验是在开放式风隧道中进行的，其风在针与针的正交最高30 m/s。实验数据是根据排放的统计特性介绍的，这是根据高分辨率大小的电流波形推断出的。电流脉动的关键特性，即脉冲间周期，峰值电流，沉积的能量和脉冲宽度，是风速和施加的直流电压的函数。所有参数随风速的分散量增加。脉间间周期的平均值随风速而降低，平均脉动频率增加。每次脉动的峰值电流和能量具有一般幅度降低的趋势，但也观察到更高的电流，更高能源的彩流爆发。在低风速下，彩流器优先沿顺风方向传播，但是随着风速的提高，更多的流媒体可以向上传播。同步成像揭示了流媒体方向与电特性之间的相关性。
An experimental study of the effect of laminar airflow on positive self-pulsating streamer coronas in a needle-to-plate geometry is presented. The experiments are performed in an open return wind tunnel with winds up to 30 m/s orthogonal to the needle. The experimental data is presented in terms of statistical properties of the discharge, inferred from high resolution, large sample-size current waveforms. The key properties of the current pulsations, namely inter-pulse period, peak current, deposited energy, and pulse width are analyzed as a function of wind speed and applied DC voltage. All parameters increase in dispersion with wind speed. The mean of the inter-pulse period decreases with wind speed and the mean pulsation frequency increases. The peak currents and energies per pulsation have a general tendency to decrease in magnitude but also higher-current, higher-energy, streamer bursts are observed. At low wind speeds, streamers preferentially propagate in the downwind direction but, as the wind speed is increased, more streamers can propagate upwind. Synchronized imaging reveals correlations between the streamer direction and the electrical characteristics.
