Numerical Modeling of Air Suspension Near-Wake Dynamics

The features of air suspension flow past a cube are investigated. A solution is found to the plane problem of the flow of two-phase medium (water drops with a volume fraction of no more than $1\%$ in the air flow, with a fixed dimension of the dispersed phase on the boundary of supply) past a body with square cross-section. The fields of distribution of physical quantities (pressure, velocity, concentration) at fixed time instants and the dynamics of their variation are presented and analyzed. The local features of the air suspension flow in the near wake are compared with the topology of the one-phase air flow. It is shown that the presence of the second phase in the air suspension leads to turbulization of the flow at small Reynolds numbers and causes the formation of a viscous vortex street in the modes of laminar flow in the subsonic region. An estimate is given of the sufficiency of the distance of the boundaries of the computational region from the cube for the solution of the plane problem of external multiphase aerodynamics.