Residence time distributions of a series of laminar stages

The Residence Time Distribution (RTD) of a series of j cylindrical (and “slit”) geometry vessels with laminar flow is analyzed. Fully transverse mixing at the points of connection between cells and no significant contribution of molecular diffusion to the mixing process are assumed. This model leads to a one-parameter (j) family of RTD curves, which are more asymmetric and long tailed than those predicted by the “ideal back-mix cells in series” and “axial dispersed plug flow” models.