Sharif Digital Repository

The solid-gas fluidized beds are widely used in the petrochemical, energy, chemical, and metallurgical industries. Because they provide fast heat- and mass-transfer rate along with good mixing behavior of solids. Because of carry over of fine particles in columnar beds, the application of tapered fluidized beds has become widespread in industires due to the variation in axial velocity along the bed height. In this work, a 2D two-fluid model (TFM) incorporating the kinetic theory of granular flow (KTGF) was used to simulate the hydrodynamic behavior of gas bubbles in a tapered fluidized bed. The experimental data obtained in the laboratory were compared with the simulation results and good...