Random Walk Model for Biomass Particle Mixing in Bubbling Fluidized Beds
journal contributionposted on 15.10.2014, 00:00 by C. Stuart Daw, Jack Halow
We propose a physically motivated random walk model to describe the spatial and temporal mixing of a single biomass particle in a bubbling fluidized bed. The model parameters are estimated from measurements of a magnetically tagged simulated biomass particle in a laboratory fluidized bed. We demonstrate that Monte Carlo simulations using the model match key statistical features of the observed behavior reasonably well. These results suggest that a model of this type can simulate the effects of biomass particle mixing in biomass conversion reactors. We suggest possible improvements to the random walk model and propose how it might be used in conjunction with computational fluid dynamics simulations.