Deposition of particles in a parallel-plate channel due to electrostatic charge, diffusion and gravitational effects

Abstract

The deposition of fine particles in channel flow due to the effects of electrostatic charge and diffusion and due to charge and gravity in the direction of flow with uniform and parabolic velocity profiles was investigated using a finite difference analysis. The variations in deposition were determined using an axial parameter which includes a ratio of the electrostatic charge to the diffusion effect. These results were determined along the channel for various values of electrostatic charge. The deposition due to diffusion and charge effect was studied and the range of charge effect was determined for which the diffusion effect may be neglected. Also, the deposition due to charge and gravity was investigated to determine the effect of the velocity profile on the deposition.