抄録
The behavior of the particle in down-flow circulating fluidized bed (downer) was simulated by DEM (Discrete Element Method) and the animation and graph of the particle behaviors were obtained. This DEM is the method that can consider influence of a turn / a collision / the current of air of the particle about each particle. And the particle diameter was set as 7mm in this gas-solid two-phase down flow simulation. Then, the simulation result was compared with the experimental data obtained by the electrical capacitance tomography (ECT). As a result, the simulation result shows a good agreement with those of the experiment.
