A free surface jet is formed when a liquid jet is discharged into a gas medium.
For free surface jet, the liquid jet impingement has demonstrated high cooling capacity as reported by Liu and Lienhard [1], Lienhard and Hadeler [2], and Bergles [3].
Recommendations on how to avoid or minimize unwanted hydrodynamic phenomena (surface rippling and droplet ejection) by upstream conditioning and nozzle design are developed for free surface jets in vacuum in the context of a qualitative understanding of the physical mechanisms at play.
During the formation of grooves, it is the residual DMF that kept the jet wet, which facilitates the void surface jet to be stretched into a grooved texture.
In this study, FLOW-3D is employed for a full 3D RANS modelling of two turbulent jet-to-crossflow cases, including free surface jet impingement.
On the other hand, the average Nusselt number decreases as relative nozzle to surface distance increases for a fixed jet diameter.
Experimental configuration allows for a free-surface unconfined jets flow.
Quantitative experimental data was obtained for the wetting of a surface by a single water jet.
For a jet velocity v ≈ 100 m/s, jet diameters down to 350 nm were found to be feasible.
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