| Abstract: | On the basis of the nonstationary two-dimensional equations of the mechanics of heterogeneous media a numerical investigation is made of the motion of a cloud of particles under the influence of gravity in an unbounded medium and the interaction of the descending cloud of particles with a flat horizontal surface. Depending on the degree of hydrodynamic interaction between the particles, there are different regimes of motion of the cloud during sedimentation; the change in its spatial configuration determined by the large-scale vortex motion of the carrier medium is determined. The concentration distributions of the particles on the sedimentation surface are obtained. A coefficient of dispersal is introduced for the cloud of particles on the flat horizontal surface, and its dependence on the concentration of the particles, their diameters, and other parameters is investigated. |
