AERODYNAMIC FOCUSING OF PARTICLES IN FLOWS WITH SHOCK WAVES
The effect of aerodynamic particle focusing in gas-particle flows is employed mainly for creating collimated beams of particles. These beams are widely used in various engineering applications, such as cutting technologies of materials, surface processing, coating, etc. In this study, two novel flow schemes are investigated, in which the effect of aerodynamic particle focusing may arise. The first one is a steady-state dusty-gas flow in the region of the interaction of two plane shock waves. The compressibility of the carrier-phase flow and the particle inertia results in the particle accumulation effect behind the wave interaction point. In the second flow scheme, the focusing effect is achieved due to the lateral force, acting on the particles in boundary layers behind the shock wave travelling in a narrow channel with a constant cross-section.