Ejector primary nozzle steam condensation: Area ratio effects and mixing layer development

Ejector refrigeration: A comprehensive review

“…Moreover, droplet nucleation and the subsequent development of condensation result in an energy transfer that cannot be accurately simulated when assuming the steam to be a perfect gas. Therefore, recent computational fluid dynamics, CFD, simulations of steam ejector performance have incorporated droplet nucleation and condensation using the homogeneous model [92][93][94]. For the ejector shape, a re-design of the nozzle is required to account for the nucleation downstream of the throat to provide a sufficient distance for avoiding the presence of flow oscillations across the sonic section [91].…”

Modelling of ejector chillers with steam and other working fluids

“…Similar remarks are found in (Ariafar et al 2014), where nucleation is introduced in a CFD simulation and the difference from a ideal gas simulation are highlighted.…”

Numerical study for the influences of primary nozzle on steam ejector performance

“…In order to study the internal condensation phenomenon of water vapor ejector and its effect on the performance of steam jet pump, Ariafar et al [18] made a numerical study on the primary nozzle of a steam ejector with the area ratio of 11, 18 and 25 so as to investigate 3 the flow characteristics differences between ideal gas model and wet steam model further. The results from the wet steam model show that the static pressure is higher than that of the ideal gas model, while difference of the momentum variation of the nozzle between the two models is very small and negligible.…”