Numerical simulation of flows in beadless disperser by finite difference lattice Boltzmann method

摘要

A new beadless disperser, an ultra-thin film high-shear disperser (UFHD), was developed, and the flow in its dispersion part (a flow between rotating and stationary rings) was simulated using the finite difference lattice Boltzmann method (FDLBM). The efficiency of the FDLBM for this kind of flow field was verified. The FDLBM possesses some distinctive features such as relatively easy implementation of boundary conditions in complicated geometries, high efficiency in parallel processing, and flexible reproduction of the interface between multiple phases, that make the method very suitable for simulating complex flows in the disperser, in which the fluid consists of a mixture of solvent and particles, and the deformation, breakup and coalescence of suspended particles occur. It was shown that the performance of the disperser can easily be simulated and elucidated by the FDLBM.