Chemical Engineering Science, Vol.102, 442-450, 2013
A lattice Boltzmann method for particle-fluid two-phase flow
A two-fluid lattice Boltzmann method (TF-LBM) is proposed for simulation of particle-fluid flows. The fluid phase is solved by using a modified LBM scheme, which combines the He-Shan-Doolen and the Cheng-Li schemes and, accordingly, restores to the fluid phase equations of the two-fluid model (TFM) by adding additional source terms. While for the sake of simplicity, the motion of particle phase is tracked by following the hard sphere discrete particle model (DPM). Three test cases, including solid-liquid sedimentation, solo particle sedimentation in air and air-solid two-phase How in a vertical pipe, are simulated with this new method. The results are compared with previous literature results and experimental data, showing fair agreement. (C) 2013 Elsevier Ltd. All rights reserved.