Discrete Particle Modeling and Simulation of Granular Flow—Pioneering Development of Numerical Prediction of Granular Flow and Fluid–Solid Multiphase Flow—

Abstract

Discrete Element Method (DEM) was proposed by Cundall and Strack (1979) and gained traction in the field of powder engineering during the late 1980s. In the 1990s, various applications of DEM were conducted in the powder technology field, and the capability of DEM for predicting powder behavior was acknowledged. In the 2000s and 2010s, advancements in computing technology and the availability of general-purpose software led to the widespread adoption of numerical simulation as a prevalent tool in industrial applications. The authors have been engaged in discrete particle modeling of gas–solid two-phase flows and the development of DEM–CFD models for the numerical analysis of both dense gas–solid two-phase flows and gas–liquid–solid three-phase flows. Thus, this paper aims to provide a comprehensive description of the pioneering development of discrete particle models and simulations conducted by the authors.