摘要
Evolution of vortex structures in round jet was simulated with a three-dimensional discrete vortex filament method. The motion of the particles was described by a Lagrangian equation and the counteraction of particles on the flow was taken into account by using a modified velocity model. It is indicated that in two-phase jet flow the introduced particles restrain the crosswise dispersion of jet shear layer and mergence of vortex structures. With the increase of St number, the influence of flow on particles motion is decreased, but the counteraction of particles on the flow is increased. The difference of flow field obtained with two models, one-way coupling model and two-way coupling model, is greater than that of particles trajectories.
Evolution of vortex structures in round jet was simulated with a three-dimensional discrete vortex filament method. The motion of the particles was described by a Lagrangian equation and the counteraction of particles on the flow was taken into account by using a modified velocity model. It is indicated that in two-phase jet flow the introduced particles restrain the crosswise dispersion of jet shear layer and mergence of vortex structures. With the increase of St number, the influence of flow on particles motion is decreased, but the counteraction of particles on the flow is increased. The difference of flow field obtained with two models, one-way coupling model and two-way coupling model, is greater than that of particles trajectories.
