Dongling Yu1, Huiling Zhang1, Xu Zeng1, Dahai Liao1,*, Nanxing Wu2,*
FDMP-Fluid Dynamics & Materials Processing, Vol.17, No.3, pp. 569-586, 2021, DOI:10.32604/fdmp.2021.014711
Abstract In order to reveal the intrinsic fluid-dynamic mechanisms of a pressure-swirl nozzle used for Si3N4 dry granulation, and effectively predict its external spray characteristics, the dynamics of air-atomized liquid two-phase flow is analyzed using a VOF (Volume of Fraction) method together with the modified realizable k-ε turbulence model. The influence of nozzle orifice shape on velocity distribution, pressure distribution is studied. The results show that the pressure difference in a convergent conical nozzle is the largest with a hollow air core being formed in the nozzle. The corresponding velocity of atomized liquid at nozzle orifice is the largest. Using a… More >
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