Lattice Boltzmann investigation on non-Newtonian fluid-particle systems

Non-Newtonian fluid-particle systems are commonly encountered in natural and industrial processes. To understand and predict the interaction between fluid and particle and the behaviors of these two distinct phases, a parallelized lattice Boltzmann (LB) model is applied to conduct a comprehensive numerical study at sub-particle level on non-Newtonian fluid-particle systems. Effects of some key factors, including flow regimes, fluid properties, porosity, size distributions and particle behaviors, will be considered and studied respectively. Based on the analysis and a series of simulated data, general constitutive correlations are proposed to be more accurate and applicable in a wide range of conditions.