Effect of Particle-Particle Collision and Particle Rotation upon Floating Mechanism of Coarse Particles in Horizontal Pneurnatic Pipe

Abstract

A numerical simulation of coarse particles of different sizes in a horizontal pneumatic pipe is carried out by considering particle-particle collision and particle rotation. A regular bouncing model is applied for both particle-particle collision and particle-wall collision. The pipe diameter is 40 mm and its length is 20 m. The mean air velocity is 20 m/s, and solid/air ratio is about 0.5. The particle floating mechanism due to particle-particle collision is examined based on the simulation.