Atomization of a Powder by a Swirling Flow with a Recirculation Zone

The problem of the motion of a swirling flow in an axisymmetric channel with permeable walls is investigated numerically. Various flow regimes including those with the formation of recirculation zones are obtained. The problem of atomization of a powder by a swirling flow for the purpose of obtaining a finely dispersed mixture is considered. Particle concentration distributions in the flow are calculated, the formation of characteristic deposition zones is demonstrated, and the unsteady process of particle transfer is investigated with allowance for deposition on the lateral surface of the channel.