Numerical Simulation of Gas-Solid Two-Phase Flow in a Vertical Pipe: On the Effect of ParticletoParticle Collision

Abstract

Fully developed gas-solid two-phase flow in a vertical pipe was simulated numerically, and solid concentrations and velocities were predicted. Particle motion in a pipe which has periodic boundaries on the inlet and the outlet was solved, taking into consideration particle-to-particle collisions. To investigate the effects of particle-to-particle collision on the particle flow, simulations were performed. It was found that particle-to-particle collisions have a large effect on the diffusion of particles in a pipe cross section even at a small concentration. The predicted solid concentrations and velocity profiles agreed well with the experimental results. © 1990, The Japan Society of Mechanical Engineers. All rights reserved.