The electrostatic precipitator has been widely utilized to control particulate pollutants in industry. It is important to optimize the configurations of the discharge and collecting electrode in order to increase the efficiency of electrostatic precipitators. The purpose of this paper is to investigate the influence of wavy collecting plates in a single-stage electrostatic precipitator. The effects of the applied voltage, volumetric flow rate per unit height, wavelength. h, and amplitude on the particle charging and behavior are extensively analyzed. The numerical model is validated by comparison with previous experimental and numerical data. The wavy collecting plate enhances the charging and transport behavior of the particles. Furthermore, changing the amplitude of the wavy collecting plate leads to a much greater effect on the particle charging and particle behavior in the wavy electrostatic precipitator, resulting in the highest collection efficiency. (C) 2021 Elsevier B.V. All rights reserved.