Study on the influence of airflow disturbance on spray atomization

Abstract

The droplet distribution characteristics are one of the key factors that determine the dust suppression effect of spray system. In order to study the droplet distribution characteristics under different working conditions, the influence mechanism of wind speed and spray angle on droplet distribution characteristics was studied based on Fluent software. The results show that the increase of wind speed and spray angle will increase the lateral momentum of droplets, resulting in the increase of longitudinal height and lateral length of spray belt. The change of spray angle causes the change of the distribution ratio of transverse momentum and longitudinal momentum of droplets. With the increase of spray angle, the transverse momentum of droplets increases and the longitudinal momentum decreases, resulting in the increase of the longitudinal height and length of spray belt. In engineering practice, attention should be paid to the coordinated control of nozzle height, spray angle and airflow speed.

Keywords

• spray dust suppression
• wind disturbance
• coal mine dust
• mass concentration distribution
• numerical simulation