绝缘阻挡放电等离子体弦向温度分布研究

Investigation of the Chord Wise Distribution of Temperature in Dielectric Barrier-Discharge Plasmas

绝缘阻挡等离子体的形成过程伴随着热量的交换过程,高压高频电源作用在电极上反复电离空气,相互作用区的弦向温度分布也是一个重要的实验参数。本文利用非致冷红外热像仪对影响等离子体区域的弦向温度分布的因素、等离子体形成的加热过程和消失的散热过程进行了研究,首次在实验上得到了绝缘阻挡放电等离子体弦向温度的高斯分布。实验结果对提高等离子体诱导出的空气流速,进而实现高速流动控制具有重要的指导意义。

The heat exchange is accompanied by the formation of the dielectric barrier discharge plasma. As the power with high amplitude and frequency repeatedly ionizes the air, the chord wise distribution of the temperature in the interactive region is an important indicator. Using the infrared imager, we investigate the influencing factors of the chord wise distribution of the temperature in the interactive region and the heating and cooling processes of the plasma are measured too. A Gaussian distribution of the chord wise distribution is observed experimentally, which provides a promising way to increase the induced air flow to realize the flow control with the dielectric barrier discharge plasma.