Design for Fluidized Bed with Draft Tube by DEM Analysis.

Effect of the tube shape on gas and particle flow in spouted beds with a porous draft tube

“…In this study, we examined the spouted bed with a porous draft tube by using the tube with perforated wall. Furthermore, the cylindrical draft tube and also the conical–cylindrical tube, which was conically expanded in its bottom (Terashita et al, 2000), were employed and the effects of the opening ratio and the shape of the draft tube on the flow characteristics, such as the minimum spouting velocity, the bed pressure, the pressure fluctuation, the annulus gas flow rate, and the solids circulation rate were investigated experimentally. In addition, bed pressure distribution was also examined in order to understand gas percolation through a porous draft tube.…”

Optimization of Operating Conditions in a High-Shear Mixer Using DEM Model: Determination of Optimal Fill Level.

“…Such reported examples included particle behavior in fluidized bed, 10,11) as well as kinetic motion of particles and mixing processes 12) in a coating drum, 13,14) Vbender 15) and double corn bender. 15,16) However, there seem to be no reports available about the simulation of kinetic motion and mixing processes, with attention given to a highshear mixer frequently used in preparation of pharmaceuticals or about the research on optimization of operating conditions on the basis of discrete element method.…”

Modeling of product variability in fluidized bed coating equipment

“…Even though the values of simulation results were not directly compared with the values of experimental results, the results from the simulations showed the same phenomena and trends as observed by Abe et al (1998) in their experiments. Terashita et al (2000) developed a numerical simulation using the discrete element method, to simulate a small particle coater. This coater is an improved version of a Wurster coating equipment.…”