A Mathematical Study on Dispersion of Non-buoyant Air Pollutants Emitted from Point Source Having Variable Wind Velocity

Abstract

AThe objective of the present study is to discuss the dispersion of non-buoyant air pollutants emitted from point source in the atmosphere, where some kind of removal mechanism is taking place. In this paper, a partial differential equation describing unsteady state dispersion of non-buoyant pollutants is solved by considering the wind velocity in the form of wave function that varies with downwind distance. Besides wind velocity, the various other factors like downwind distance, vertical distance, and cross-wind distance are also considered. The concentration of pollutants is calculated and variations of concentration profile with various factors are shown and results are analyzed.