A novel simulation method for predicting ozone generation in corona discharge region

In this paper, a novel ozone prediction model was developed based on the mechanism of ozone generation in the corona discharge region that ionized region would make oxygen become ozone. The coupled solving equation of electrostatic field and ozone concentration were established, which considered the influence factors of polarity, voltage, current, free diffusion, and gas velocity. A pin-cylinder corona discharge device was used to observe the status of corona discharge and measure the ozone concentration in positive and negative polarity conditions, respectively. Results showed that the corona discharge region in two polarity conditions presented the different status and gave rise to unlike ozone concentration distribution. The novel ozone prediction model in this work was confirmed as an accurate tool to predict the ozone generation and distribution in the fluid domain, and would exert its essential role in the guidance of ESPs design and the control of ozone risk. (C) 2020 Elsevier Ltd. All rights reserved.