Near-field development of a row of round jets at low Reynolds numbers

A computational parametric study on the development of confluent round jet arrays

“…While their behaviour is similar to that described in the above-mentioned papers, unconfined jets also showed a strong convergence of jets along the side of the array, also reported by [19]. A comparison between a single row of jets and a square confluent jet array was performed in [33]. It was concluded that the strong jet convergence was only present in the square array and that the lateral displacement had a large impact on flow field development.…”

Experimental evaluation of an intermittent air supply system – Part 1: Thermal comfort and ventilation efficiency measurements

“…The resulting jet sweeps a width of 150 cm (or 75 cm from the centerline on either sides of the nozzle) at a height of 0.80 m from the floor. This strategy uses single row of jets as Ghahremanian [25] had shown that a single row of jets, after merging produce a higher center line velocity and low turbulence compared to a single jet or array of jets. Thus AJS tries to apply these properties of single row of confluent jets to maximize on energy saving and increase concentration of outdoor air at the breathing height (1.1 m from floor).…”

A review of advanced air distribution methods - theory, practice, limitations and solutions

“…Confluent jets can be defined as multiple round jets issue from different nozzles (Awbi, 2003). Typically, the flow field of confluent jets consists of the initial, converging, merging and combined regions (Ghahremanian et al, 2014a). After a certain distance from the supply device, the combined jets behave as a single jet, with the individual jets could no longer be identified.…”

“…Contour plots and cross-sectional profiles of the dimensionless mean velocity for an in-line array of round jets can be seen ( Fig. 10) (Ghahremanian et al, 2014a;Ghahremanian et al, 2014b). (Ghahremanian et al, 2014a;Ghahremanian et al, 2014b).…”