Investigation of the effect of water droplet injection on condensation flow of different nozzles geometry
Department of Mechanical Engineering, Center of Computational Energy, Hakim Sabzevari University, Sabzevar, Iran
2 Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho‑Maklaya Street, 117198, Moscow, Russian Federation
Accepted: 7 May 2022
Published online: 21 May 2022
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.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022