Control of Ionic Wind of DC Corona Discharge in Point-to-Punched-plate Electrode Systems

초록

Ionic wind isproduced by a corona discharge when a DC high voltage is applied across a point-to-plane gap. This electrical effect has been studied in several beneficial application fields such as electrostatic cooling, ozone generation, electrostatic precipitation and electrostatic spraying. Also ionic wind might be used in aerodynamic, for example, heat transfer, airflow modification, and etc. This paper presents the experimental results for the control of ionic wind produced by DC corona discharges. Specifically, the airflow generates from the tip of point to plate in the point-to-punched-plate electrode systems. The velocity of ionic wind was measured as a function of the applied voltage, diameter of the punched hole on plate electrode and spacing between the point-to-plate electrodes. The velocity of ionic wind is linearly increased with an increase in applied voltage and ranges from 1 to 3 m/sec at the locations of 100-200 mm behind the punched-plate.