Abstract
The deformation and breakup of a droplet in two-phase shear flow were simulated by the finite difference lattice Boltzmann method (FDLBM). The fine droplets formation process was investigated in a beadless disperser using ultrathin film and high shear (ultrathin film high-shear disperser, UFHD). As a result, the critical capillary number,C ac,was found at a constant Reynolds number,R e.The necessary condition for the creation of fine droplets in the disperser was that the capillary numberC a>C ac.The atomisation ability of the disperser was discussed based onC ac.The simulation results demonstrated that the disperser can be used to prepare nanometre-size droplets.
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