residence time distribution in a continuous rotary drum by dem simulation

Rotary drum is used in many industrial applications such as pyrolysis of bio-matter# with the increase in the computational capacity and parallel computing, more industrial units can be simulated by detailed models# discrete element method is a powerful tool for analysis of discontinuous media such as powders# in this study, the effect of inclination angle and rotation speed are studied# the results showed that mean residence time decreased from 24 s to 6 s as the inclination angle increases from 6° to 14 and this relation is linear# the distribution of residence time gets narrower with inclination angle# the mean residence time also decreased from 37 s to 14 s as the rotation speed increased from 3 rpm to 9 rpm# the distribution of residence time was also got narrower as the rotation speed increases# a linear relation between drum rotation speed and mean residence time was also observed#