| Summary: | 碩士 === 國立中山大學 === 環境工程研究所 === 87 === CFX-FLOW3D software was modified for gas/particle flow systems and used to predict the flow parameters in a bubbling fluidized bed with uniform gas distribution. Solid particles and air were used as solid and gas phases, respectively.
Three dimension, transient, turbulent, heat transfer flow were simulated for the continuous phase (air) and the dispersed phase (solid particles).
Using the two-fluid model approach, the gas and particle velocity, volume fraction, temperature distribution, turbulent kinetics, elutriation, and pressure drop profiles were calculated for each phase. Results showed that inlet gas conditions play an important role in the overall mixing and heat transfer of the gas and particulate phase. The heat transfer efficiency increases with the percent of second-air. As primary air preheat at 250 degrees C, the mixed behavior was optimum.
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