پديدآورندگان :
golzari jalal m Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran , zokaee ashtiani f Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran , dabir b Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran , veladat r Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
چكيده فارسي :
A population balance model (PBM) has been integrated with CFD to model aggregation of microalgae particles in flocculation systems. The model includes terms to describe the rate of particle-particle collisions that lead to aggregation and breakage. Shear rate is one of the most controversial factors in PBM that highly affects this rate and generally the dynamic behavior of flocculation due to its direct effect on the collision mechanism. Here our case study was to investigate variations of the shear rate and its impact on the flocculation process. The fluid model was turbulent two-phase Eulerian/Eulerian applying the k- turbulence model and the PBM consisted of 40 particle size groups. Ansys CFX 14.5 software package has been successfully applied to couple PBM-CFD numerical investigations. Results showed that increase in shear rate of the system leads to decrease in volume average floc diameter
