A study of the flow characteristics of non-isodensity and dual-component particulates in a fluidized bed

On the basis of particulate dynamics and gas-solid two-phase hydrodynamics set up was a movement-collision decoupled model for the dense gas-solid two-phase and non-isodensity dual-component particulates in a fluidized bed. By using a hard sphere simulation method the collision among particulates was studied with a large eddy simulation method being employed to study gas- phase turbulent flows. A single-particulate movement equation was established based on Newton's second law. Newton's third law was applied to determine the two-way coupling resulting from the interaction of particulate phase and gas phase. A numerical simulation was performed for the gas-solid two-phase flow of the non-isodensity dual-component particulates in a two-dimensional bubbling fluidized bed. The calculation results indicate that the recovery factor of particulate elasticity may have an impact on laminar flow characteristics.