Research on the effect mechanisms of airflow disturbance on droplet distribution characteristics

Droplet distribution characteristics are the main factors affecting the effect of spray dust removal. In order to study the droplet distribution characteristics under different working conditions, the special characteristics of droplet distribution at different wind speeds and spray angles are analyzed based on Fluent. We show that different wind speeds and spray angles increase the longitudinal height and transverse length of the spray band mainly by increasing the transverse momentum of the droplet. The increase of wind speed leads to the inconsistent transverse momentum of droplets in different spatial positions, which enhances the droplet aggregation effect, thus forming the spray zone around the large size droplet layer; the increase of spray angle mainly changes the exit momentum of the horizontal and vertical distribution ratio, and the momentum of all droplets in space is more uniform, thus having no significant impact on the distribution characteristics of droplet size. In addition, the droplet distribution characteristics near the shearer after the nozzle on the shearer are studied. These results are of great significance to guide the spray dust removal in the process of coal mining.