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PREDICTION OF GASPARTICLE FLOWS AND GAS COMBUSTION IN A CYCLONE FURNACEYincheng Guo AbstractOn the basis of the pure twofluid model for turbulent reacting gasparticle flows with combusting pulverized coal particles, a new comprehensive model for pulverized coal combustion was developed by incorporating a modified k−ε−kp model, a general model of pulverized coal devolatilization and a general model of char combustion. Both gasphase and particlephase conservation equations are described in the Eulerian coordinates, and these equations are integrated in the computational cell to obtained finitedifference equations. As the first stage of numerical modeling of pulverized coal combustion in the cyclone furnace, three dimensional simulation of turbulent gas combustion and gasparticle flows have been made. Predicted results show that there is a near wall recirculating zone at the bottom of the cyclone furnace, and the recirculating zone enhances ignition and flame stabilization. Results of tangential velocity distribution of both gas phase and particle phase are similar to those of the Rankine vortex. 