Mathematical model and results of numerical calculations for $\mathrm{UF}_6$ overflowing in presence of microquantities of light impurities

We present a mathematical model and results of numerical calculations for distribution of light impurities in a liquid bulk of $\mathrm{UF}_6$ under its overflowing. The mathematical model is based on the Navier–Stokes equations for a viscous incompressible fluid with the Boussinesq approximation. The system of equations was solved numerically by the Patankar method. Correlations between evaporated light impurities mass and poured with fluid one have developed.