ANALYSIS OF THE SPATIAL-DISTRIBUTION OF AEROSOL DISPERSIONS

The dispersion of contaminant particles in a fluid media is studied co nsidering the main mechanisms for coagulation and removal, with specia l emphasis on its application to the held of nuclear reactor safety. S tarting from the general balance equation for the aerosol size spectru m as a function of position and time, a diffusion-convection equation is derived using the method of moments. The equation is analyzed for a variety of cases, and the solutions are discussed and compared with e xisting codes calculations as well as exact analytical solutions. The method presented is very useful in the sense that it reduces the compl exity of the spatial aerosol dispersion to the domain of the classical diffusion-convection transport analysis.