Certain Features of the Calculation of a Two-Phase Flow in the Droplet Regime

A model of two-phase flow in the droplet regime has been considered as a particular case of a more general model with simplifying assumptions acceptable for the calculation of the evaporation of water in the case of injection into the channel of a gas-turbine engine. The chosen implicit integration scheme allows engineering calculations for a highly stiff polydisperse system appearing under the complete evaporation of a group of droplets. A procedure has been developed to avoid a critical point in the process of the simulation of evaporation (division by zero) at zero diameter of droplets or equal velocities of droplets and gas.