Abstract：To investigate the adsorption mechanism of dust particles on a single charged droplet, air drag force, gravity force and electrostatic force were considered. By solving Newton equation, the motion equation for dust particles in the vicinity of charged droplets was achieved. A numerical model was established to track the dust particle trajectories in the vicinity of charged droplets. The collection efficiency of dust particles was mainly affected by Stokes and Coulomp number. The primary effect parameters and acting mechanism on the collection process were obtained. The simulation results agree well with the experimental data. The results show that larger size of charged droplet leads to bigger collection area ratio, while for the same vapor liquid ratio, the collection efficiency is larger for smaller droplet. The dust particles with size among 1 μm to 10 μm have good collection efficiency.
2015, Vol. 36 
