Transient dispersion of dust by wind from nonpoint sources

This study is concerned with unsteady dispersion of particulates from a nonpoint source such as a storage pile and has been solved analytically. The effects of the particle sizes, the heights of the emission source, wind velocity, and the ground conditions on the downwind particle concentration distribution and deposition are presented using the dust puff model. Results indicate that a significant amount of particle deposition can occur even at locations far away from the emission source. The effect of the height of emission source on the downwind particle concentration is only significant near the emission source.