Simulations of Particle Dynamics in a Confined Shear Flow

摘要

The dynamic behavior of particles injected into the high-speed shear flow in the confined geometry of an axisym. metric dump combnstor is studied computationally using the flux-corrected transport algorithm and a Lagrangian approach to track particles in the flow. Small particles are seen to travel with the large vortical structures, while intermediate sized particles are seen to form sheets as they are ejected from these structures. Dispersion of the par- ticles is found to be optimal at Stokes numbers on the order of unity when particles that have been deposited on the combustor walls are neglected.