中文摘要：

大气压非平衡等离子体的输运特性直接制约着工业电收尘和飞行器等离子体隐身的进一步发展,影响该输运特性的因素较多,包括放电区的压力、气体流速、电场强度、注入功率密度及其耗能密度等。为提高大气压非平衡等离子体输运效率,以线板形式电晕放电为手段进行电离流经放电区气体的实验,运用DLY-3型大气离子测量仪测量脱离电场约束的正负离子浓度,研究了注入功率密度及耗能密度对离子浓度输运率的影响。研究结果表明,在一定程度上随着注入功率密度、耗能密度的增加,离子浓度输运率越高.但当注入功率密度和耗能密度达到一定值时,离子输运率变化趋于平缓;同时,高风速比低风速的等离子体输运率要高出几个数量级。

英文摘要：

The development of electric precipitator and craft＇s stealth with plasma is greatly influenced by transport characteristic of non-equilibrium plasma. Nonetheless, there are many restricting factors including pressure, gas velocity, ionization electric field intensity, input power, power-wasting density and so on, and few published literatures had reported it. In the experiment, air flowing through the corona discharge area and the density of positive/ negative ion away from corona discharge area was measured by DLY-3 AIR ION DETECTOR. The experiment aims to study the influence of input power and power-wasting density on ions transport ratio. The result shows that, within a certain range, plasma transport ratio increases with the growth of input power and power-wasting density. However, the growth of plasma transport ratio trend to be slow when a particular value of input power and power wasting density is reached. Namely, for a certain velocity of blowing wind, the more input power is applied, the greater electric field intensity is obtained. It is an advantage for the production ratio of plasma in the corona discharge area, but it is a disadvantage for plasma transport ratio away from the corona discharge area because of the stronger electric field sanction. The results also show that, at the same input power and power-wasting density, plasma transport ratio with stronger wind is much higher than that with weaker wind blowing out of the corona dis- charge field. The difference of transport plasma ratio between lower wind and higher wind is several orders of magnitude.