Simulation and experiment of influence of nozzle structure on bottom-blowing furnace flowing process

Water model was utilized to study the flowing process within a bottom-blowing furnace designed by some company, which was simulated by VOF model in the flowing process. The simulation and experimental results were compared. The results show that the VOF method can describe the formation, growing up and separation actions in the rising process, which can be a foundation of using the model to research the thermal process of the bottom-blowing furnace. According to the comparison of the influence on flowing process of four nozzles with different structures, it is indicated that a nozzle with disperse spouts can stir a larger zone. This disperse spouts are benefit to promote the process of stirring and reaction more efficiently, whereas the pressure fluctuation near the nozzle export is more obvious, which may affect the lifetime of the nozzle. ©, 2014, Central South University of Technology. All right reserved.