چكيده به لاتين
In this dissertation, the hydrodynamics of the fluidized beds of the two areas used were studied using experiments and simulations. In the laboratory section, a fluidized bed of two permitted areas with small dimensions has been interpreted and constructed. DIA and PIV image processing methods were used to prepare videos, images, and analyze it. EPS particles with a density of 1095 kg / m3 and an average size of 1 mm were used for experiments during this study. Also, MFIX (Multi-Phase with Interphase Exchange) open-source software was used to simulate a two-zone fluid bed by computational fluid-discrete particle (CFD-DEM) method. The results of this study proved that the gas velocity from the lower region has a significant role in the hydrodynamics of the fluidized bed of the two zones and also from the velocity of 0.95 m / s onwards, the particles that do not move between the two zones are at their minimum. Regarding the role of the simulation depth in the bed, it can be seen that the closer the bed depth in the simulation is to the actual bed depth, the more consistent the simulation results are with the laboratory results and to the extent that more than 7 particles are less different laboratory results will have.
To use the results in the post-processing stage, ParaView software version 5.6 and MFIX software version 19.2.2 have been used.
