Influence of Dispersed Particles on Structure of a Vortex Ring and Its Propagation

An approach to modelling the unsteady axisymmetric vortex flows of a gas-dispersed mixture with an incompressible carrier phase is developed. Numerical modelling of formation of a vortex ring, its capture of dispersed particles and particle transfer is carried out, taking into account the influence of the dispersed phase on the vortex structure of the flow. For numerical simulations, the unsteady Navier–Stokes equations for a viscous incompressible fluid are used. The movement of particles is described based on the discrete-trajectory approach of sample particles. The calculation results make it possible to establish the features of the transfer and behavior of particles of different inertia in vortex rings, as well as changes in the characteristics of the vortex ring in the presence of particles of different sizes and concentrations.