Impact of a jet orifice on the hydrodynamics and the oil droplet size distribution

Experiments were performed to understand the impact of orifice on droplet size in shear breakup region. Oil jet was released vertically from two types: a pipe and converging nozzle. The roll-up vortices observed clearly near edge with nozzle while elongated oil ligaments direction mostly orifice. droplets shed field layer increased along for both types. At different distances orifice, characteristic (d50) up 40% larger Multiphase, large-eddy simulations (LES) types conducted interpret distribution (DSD) experiments. A thicker boundary that initially formed inside dominated pipe. turbulent kinetic energy dissipation rate (ε) higher peak values ε found closer centerline where holdup is larger. viscous stress than within initial diameters slightly lower or at following studied. Reynolds significantly tangential vorticity one diameter also dramatically key parameter liquid be thickness similar prior works gas. induced size. increase instabilities direction.