Abstract:
In this paper we study the transient ozone generation process in polluted urban areas, using a simplified set of chemical reactions for the NOx and hydrocarbon photolysis. We obtained a reduced kinetic mechanism and it is solved using the boundary layer theory due to the appearance of two time scales in the problem associated with the photo-chemical reactions of the NO2 and unburned fuel, respectively. Assuming a temporal addition of ozone precursor species, we obtained in closed form, the temporal evolution of the ozone concentration as a function of the physico-chemical parameters. (C) 1999 Elsevier Science Ltd. All rights reserved.