Three-dimensional models of hydrodynamics and erosion in fluidized- bed combustors

Three-dimensional hydrodynamic models for gas-solids flow were developed and used to compute bubble and solids motion in rectangular fluidized beds. Our computed results demonstrate the significance and necessity for three-dimensional models of hydrodynamics and erosion in fluidized-bed combustors. A kinetic theory model for erosion using Finnie's single-particle ductile erosion model and kinetic theory was used to compute erosion in a rectangular fluidized bed containing a single tube. Comparison of two-dimensional and three-dimensional computed erosion rates and patterns clearly shows the superiority of three-dimensional modeling. 17 refs., 7 figs., 1 tab.