These models are onedimensional,two-fluid models capable of predicting cross-sectional averaged profiles of phase velocities, temperatures and moisture contents.Discrete element modeling of gas–particle heat transfer in horizontal conveyingwas reported [8] for drying of large polypropylene particles. A common feature in the results of many of earlier simulations is the well accepted fact that much of the interphasemomentum, heat andmass transfer take place over a small region, near solid entry namely acceleration