Submicron charged dust particle interception by charged drops

This paper presents a numerical algorithm for simulating the trajectories of charged dust particles moving horizontally in the vicinity of a free-falling, oppositely charged liquid droplet. The trajectories are calculated in three-dimensional space relative to the liquid droplet. This approach enables the determination of the envelope of possible trajectories which will result in collection on the droplet. The air drag, electrical, and gravitational forces are taken into account. A number of different models for the air flow around a spherical droplet are compared. The algorithm is used to determine the collection efficiency, according to a newly proposed definition, for a single charged spherical collector