Abstract
Electroaerodynamic investigation has been carried out in a pin-to-plate gas discharge system to clarify the mechanism of repulsive force generation between the pin and the plate electrode at corona discharge. Numerical calculation has been conducted by two steps. At the first place, corona discharge field was calculated to deduce volumetric force and then in-duced ionic wind was calculated. Calculated pressure distribution on the plate electrode was in the order of 10 Pa that was in good agreement with the measured. Calculated velocity at the center was several m/s that is confirmed by a time-of-flight experiment and the velocity distribution near the pin electrode also agreed with the measured with a laser Doppler velocimeter. These results confirm that the ionic wind is the cause of the repulsive force at the corona discharge.
