The flow between rotation ring and stationary ring is simulated by finite difference lattice Boltzmann method (FDLBM). The efficacy of lattice Boltzmann method for this kind flow field is verified, which shows that the effect of material and surface condition of rings on the disperser performance can be simulated and illuminated by FDLBM.
The deformation and breakup of a droplet in two phase shear flow are simulated by the finite difference lattice Boltzmann method (FDLBM). The fine particle formation process in a medialess nanodisperser using ultrathin film and high shear is investigated. As a result, the critical Capillary number Cac, is found under a constant Reynolds number, Re. The necessary condition for the creation of fine particles by the disperser is Ca>Cac. Based on the Cac, the atomization ability of the disperser is discussed. Simulation results demonstrate that the disperser can be used to form nanoparticles.