Projects per year
Abstract
Fluid flowing through packed beds of multisized spheres is studied by a parallel latticeBoltzmann (LB) model. The packed beds are generated by means of the discrete element method. First, the LB model is used to study the effects of size ratio and volume fraction on the fluid flow and quantify the drag forces on binary mixtures of particles. Typical flow behaviours are identified in relation to pore geometries. The results suggest that the polydispersity in particle size enhances local structure heterogeneity and flow nonuniformity, resulting in distributed fluidparticle interaction forces. Then, based on the simulated data, a new equation is formulated to calculate the mean individual drag force. The equation is extended to multicomponent mixtures of particles. The results show that the new equation is more accurate and reliable than those in the literature, and can be generally used in the modelling of particlefluid flows.
Original language  English 

Pages (fromto)  508523 
Number of pages  16 
Journal  Chemical Engineering Science 
Volume  116 
DOIs  
Publication status  Published  6 Sep 2014 
Externally published  Yes 
Keywords
 Computation
 Drag force
 Fluid mechanics
 LatticeBoltzmann simulation
 Packed bed
 Porous media
Projects
 1 Finished

Discrete particle modelling and analysis of complex particlefluid flows
Australian Research Council (ARC)
1/01/10 → 31/12/14
Project: Research