Numerical Simulation of Dense Gas-Solid Two-Phase Flows Including Large Particles

In a number of applications of dense gas-solid flows such as fluidized bed and pneumatic conveyer, the size of solid particles is not uniform and a large size difference exists. Because it is strongly related to the system efficiency, the understanding of mixing and dispersion characteristics of the particles in detail is important while it is not trivial due to inherent complexities of phenomena and measurement difficulties in experiments. In this review paper, fundamentals and results of several validation studies of Fictitious particle method (FPM) that is a model extended from Discrete element method-computational fluid dynamics (DEM-CFD) targeting systems with large particle size difference are presented.