Discrete Particle Simulations of Granulate Flows and Gas-Solid Flows

摘要

Recent development of computers makes the discrete particle simulation a powerful means for predicting granulate flows. Motion of individual particles is calculated numerically in the discrete particle simulation using the Newtonian equations of motion. The present paper deals with flows where particle-to-fluid interaction as well as particle-to-particle interaction have important effects on the phenomena. Models, equations and calculation methods are described. Also, the algorithm for computer programming is explained. As examples of applications, various cases are shown, such as hopper flows, particle segregation phenomena, particle mixing in a rotating drum, dense phase pneumatic conveying, spouted bed, dense phase fluidized bed, fast circulating fluidized bed and so on.