Droplet deposition on a wall from a two-phase turbulent unsteady flow with peripheral swirl

Water droplet deposition from a turbulent pulsed two-phase flow in a cylindrical channel with peripheral swirling was numerically simulated using the Eulerian description with varying initial mass concentration of water droplets. The gas phase is described by a system of three-dimensional URANS equations, taking into account the influence of particles on transport processes in the carrier phase. Gas phase turbulence is calculated using an elliptical Reynolds stress transport model, also accounting for the influence of the dispersed phase. The maximum concentration of the deposited liquid was achieved in the pulse frequency range f = 100–150 Hz (Strouhal number Sr = 0.4–0.6).