| Abstract [eng] |
The final master's thesis investigates the corona discharge and the electric wind it generates. The literature review covers the main methods for modeling the electric field, the applications and types of corona discharge, possible electrode configurations, and the principles of corona discharge formation. Additionally, the review examines the historical development of the electric wind generated by corona discharge, the dependence of the electric wind formation mechanism on polarization, and the generation of electric wind by corona discharge. A wire-to-plate electrode configuration was chosen for the study due to its wide practical application and the higher EHD wind velocity it produces compared to other configurations. The modeling uses the "COMSOL Multiphysics 6.2" software, applying the finite element method. A mathematical model of corona discharge is developed, the onset voltage for the discharge is determined, and the electric field strength is calculated. The dependencies of corona current and EHD wind velocity on applied voltage are analyzed, along with the spatial distributions of electric potential, space charge density, and electric field intensity on the electrode surface. An experimental investigation of corona discharge and generated EHD wind is also carried out using the same wire-to-plate electrode configuration. The experimental results are analyzed and compared with those obtained from the mathematical model to assess the model’s accuracy and reliability. |
