MODELING OF ATMOSPHERIC-POLLUTION BY EXPLOSIONS

A mathematical model of air pollution by gaseous and particulate subst ances caused by near-ground explosion is developed. The model describe s the evolution of a hot cloud of explosion products and the transport of the contaminants by upward convective flows. A software package AP EX (Atmospheric Pollution by EXplosion) is developed for IBM PC/386/48 6 computers. The capability of the model is demonstrated on two proble ms - pollution of the atmosphere by fine dispersed particles carried a loft by a nuclear burst cloud (a large-scale thermal) and air pollutio n after an explosion and release of a hazardous particulate contaminan t (a small-scale cloud). The calculated time-dependent evolution of a hot cloud and the transport of the pollutants by the rising thermal ar e demonstrated. Final distributions of the particulate matter in the a tmosphere after the rise of the hot cloud are presented.