NUMERICAL-SIMULATION OF DRYING IN A CYCLONE

This work presents a complete improved mathematical model of drying in cyclone. The slip condition of the particles on the wall, the heat tr ansfer wall-particle and the shrinkage of the particles during the dry ing process were considered. The mathematical model considers a two-di mensional turbulent gas-particle now where the particle phase is treat ed as a continuum. The momentum equations of both particle and gas pha ses were written in cylindrical coordinates. The discretized equations were solved by the SIMPLE algorithm. Considering the slip condition t o the particle phase and the shrinkage of the material during the dryi ng process it was revealed a better fitness between numerical and expe rimental results than the previous model.