Investigation of the effect of water droplet injection on condensation flow of different nozzles geometry

In the present study, the effect of droplet injection of Moore A (MA), and De Laval nozzles (De) on the condensation shock, has been modeled and compared. The Eulerian–Eulerian method has been used in two-dimensional, compressible, viscous, and turbulent using the k−ω SST turbulence model to simulate the condensation flow field numerically. Four different nozzle inlet injection modes are evaluated; droplet injection in all cases caused a weaker condensation shock in the MA nozzle and could eliminate the De nozzle's shock. Also, the Mach number has increased by 2 and 5% at the output of the MA and De nozzles. The droplet spraying does not affect MA nozzle's wetness fraction, but it is reduced by about 30% at the De nozzle output. In general, the results showed that spray droplets at the inlet depend on geometry to improve aerodynamic and thermodynamic parameters. © 2022, The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.