STUDY ON BEHAVIOR OF PARTICLES IN HORIZONTAL SWIRLING FLOWS

Abstract

To predict 3-D particle's motion in swirling flows, a numerical model was proposed on the basis of theoretical equations of motion and rotation for a particle as well as the velocity distribution model for swirling flows. The velocity fluctuations, which were assumed to be the Markov process, were also taken into account. 3-D particle's motion in horizontal swirling flows was measured using imaging processing techniques. The validity of the proposed model was confirmed through the comparison with the experimental results. The effects of particle diameter and particle density on the particle's motion were investigated. The relation between the forces acting on the particles and the particle's motion were examined.