CARRY OF DISPERSE-ADMIXTURE PARTICLES BY A VORTEX RING

A numerical simulation of the gasdynamic processes accompanying the formation and propagation of vortex rings obtained with the use of a piston-type generator has been performed. The formation of a vortex ring, the capture of particles of a disperse admixture by it, and their carry by the ring are considered. The numerical calculations were conducted with the use of nonstationary Navier–Stokes equations, and the movement of particles was defi ned using the discrete-trajectory method. The distribution of the admixture particles in a vortex ring was determined depending on the conditions of its formation. The infl uence of the characteristics of a vortex ring on the carry of a passive admixture by it was investigated. The reasons for the qualitative and quantitative diff erences between the losses of particles in a vortex ring in the path of its movement in diff erent regimes are discussed
A numerical simulation of the gasdynamic processes accompanying the formation and propagation of vortex rings obtained with the use of a piston-type generator has been performed. The formation of a vortex ring, the capture of particles of a disperse admixture by it, and their carry by the ring are considered. The numerical calculations were conducted with the use of nonstationary Navier–Stokes equations, and the movement of particles was defi ned using the discrete-trajectory method. The distribution of the admixture particles in a vortex ring was determined depending on the conditions of its formation. The infl uence of the characteristics of a vortex ring on the carry of a passive admixture by it was investigated. The reasons for the qualitative and quantitative diff erences between the losses of particles in a vortex ring in the path of its movement in diff erent regimes are discussed
Author:  K. N. Volkov, V. N. Emel′yanov, I. E. Kapranov
Keywords:  computational gas dynamics, vortex dynamics, vortex ring, particles, two-phase fl ow
Page:  869-876