Numerical Simulation of the Behavioral Characteristics of Sprayed Water Droplets in a Hot Gas–Solid Fluidized Bed

The geometric model is set up for a 1:1 three-phase fluidized bedThree-phase fluidized bed, simulated calculations in the base of the air–tailings–water hot gas–solid–liquid fluidized bed experimental device. The Computational Fluid Dynamics (CFD) model utilizes the Eulerian–Eulerian multiphase modeling method and incorporates the dense discrete-phase (DDPM)Dense Discrete Phase Model (DDPM) model to simulate the flow of water droplets, introduced heat transfer, turbulence, and evaporation models to achieve a coupled solution. The simulation focuses on analyzing the flow, heat transfer, and superheated evaporationSuperheated evaporation of water droplets during the fluidized treatment of tailings. The feasibility of the numerical simulationNumerical simulation is verified through visualization experiments. Furthermore, the CFD model is employed to investigate the flow, evaporation, and interaction behaviors of water droplets of different sizes sprayed into a hot gas–solid fluidized bed and their effects on the fluidization state.