电极参数对尖-板电极空气放电离子风特性的影响

Ionic Wind Characteristic of Tine-Plat Affected by Electrode Parameter From Atmosphere Discharge

空气放电离子风技术是一门新颖的技术,在实际应用方面具有现有技术手段不可比拟的优势。文章采用PIV(Particle Image Velocimetry)粒子测速技术,获得了清晰准确的离子风速度场图像。研究结果显示:减小尖电极曲率半径,可以在同样的电压等级条件下有效地提高离子风速度;接地电极采用金属网,可以克服板状电极对于离子风发展的部分束缚作用,在较低电压下能得到较高的风速,且可获得较为广阔、流场较为均匀的离子风作用区域。

Ionic wind from atmosphere discharge is a neoteric technique,which has inimitable advantages than present technologies in practical application.By adopting the PIV（Particle Image Velocimetry） system,images of ionic wind velocity field are pictured clearly and accurately.The research results indicate that higher speed of ionic wind can be achieved by decreasing the curvature radius of the pin electrode,being applied the same class of voltage,and that high speed of ionic wind can be obtained with lower voltage as well as the effective area and the velocity field of wind are vast and even,which are resulted from the grounding metal net electrode,declining the restriction to the ionice wind.