Analysing jet breakup
An experimental study on Rayleigh-Plateau instability and subsequent droplet formation
C.R. Leliveld (TU Delft - Applied Sciences)
Hüseyin Burak Eral – Mentor
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Abstract
This report aimed to investigate jet-breakup through nozzles and its dependencies on viscosity, flowrate and nozzle diameter. By measuring the transition point from dripping to jetting as a function of nozzle diameter and viscosity, it was found that increasing nozzle diameters require increasing flowrates to reach jetting mode, while increasing viscosity lowers the critical flow-rate for the transition point. The breakup length was also observed to be influenced by both viscosity, flow-rate and nozzle size: increasing either viscosity or flow-rate resulted in an increase of the breakup length. Matching these results in dimensionless form to predictions in literature proved to be difficult, presumably due to the relatively small nozzle diameters used in this research.