Application of the Mixing Model to Analyze the Dynamics of Propagation of Multicomponent Multiphase Leakage in Individual Rooms of Containment

Abstract

A model for analyzing the dynamics of the distribution of multicomponent multiphase leakage in individual rooms of containment has been built. The expiration of the steam-water mixture is considered, taking into account the transfer of non-condensable gases and solid aerosol impurities in the air environment of the containment. A mixing model was used to calculate the effective transfer coefficients (thermal conductivity, diffusion, viscosity) and carrier density. It has been accepted that non-condensable gases and solid aerosols are radioactive substances. A test calculation of the propagation of the vapor-liquid flow was carried out, taking into account impurity substances in a typical containment box for nuclear power plants with WWER-type reactors.