Numerical and Analytical Solutions of the Aerosol Dynamic Equation in Reactor Containment

During a severe reactor accident, nuclear aerosol composed of fission products, actinides and structural material are released into the reactor containment at different locations and times. Methods and approximations inherent in modeling of aerosol dynamics and evolution for nuclear reactor source term estimation have been investigated. Several aerosol evolution problems are considered to assess numerical methods of solving the aerosol dynamic equation.
The space-dependent aerosol dynamic equation is solved to assess implications of spatial homogenization of aerosol distributions. The sectional method of solving the aerosol dynamic equation is quite efficient in modeling of coagulation problems, but
should be improved for simulation of deposition problems.