5. Case Studies

In this chapter, three case studies are presented: the first case presents computational fluid dynamics (CFD) modeling and simulation of a pharmaceutical bubbling bed drying process. The mathematical model used in Case1 is composed of the continuity, momentum, energy, and species transfer equations to simulate the flow pattern and heat and mass transfer in the pharmaceutical drying processes based on bubbling fluidized beds. Case 2 presents CFD modeling and simulation of a reactive gas–solid system in the riser section of a circulating fluidized bed (CFB) reactor representing a CO₂ capture process using solid sorbents. In Case 3, a two-way coupled computational fluid dynamics-population balance equation (CFD-PBE) is presented following the second case where the density distribution of the solid phase is changing due to the chemical reaction (i.e., carbon capture) between the solid and gas phases.