Investigating the Impact of Electrode Wire Interaction on EHD Flow in Two-Wire-to-Plate Corona Devices: A Computational Analysis

The present study conducts a numerical investigation of the shielding effect between adjacent corona discharge electrodes in two-wire-to-plate corona devices. The primary focus of the study is to analyze the impact of mutual electrostatic interaction or shielding effect between two high-voltage wires on the electrohydrodynamic (EHD) force’s direction and magnitude, as well as the overall structure of the EHD flow. The findings reveal that the attenuation of the electric current, space charge, and magnitude of the EHD force is more dominant when the distance between the wires decreases. Moreover, the shielding effect is closely related to the wire-plate electrode space and wire radius. The results highlight the importance of considering the shielding effect in designing and optimizing electrostatic precipitators and other corona devices that rely on the EHD flow.