Modeling the process of mixing a gas-droplet wall jet with a heated turbulent flow in a cylindrical channel

Numerical modeling of the local flow structure and mixing process during injection of a gas-droplet wall jet into a turbulent heated air flow has been performed. The numerical solution is based on a system of axisymmetric Reynolds-averaged Navier–Stokes equations (RANS) taking into account the two-phase character of the flow. To describe the dynamics and heat and mass transfer in the dispersed phase, the Euler two-fluid approach is applied. A significant effect of the liquid mass concentration on the distribution of parameters over the channel cross section and thermal efficiency is shown. An increase in thermal efficiency reaches 30 % in the initial part of the channel and 200 % in its end part in comparison with a single-phase wall air jet.