Analysing jet breakup

An experimental study on Rayleigh-Plateau instability and subsequent droplet formation

Bachelor thesis (2018)

Authors

C.R. Leliveld Applied Sciences

Contributors

H.B. Eral (supervisor 1)
Faculty
Applied Sciences
Copyright: © 2018 Robert Leliveld
Jet breakup Rayleigh-Plateau Nozzle Viscosity Flow rate Instability Droplet Drop Formation Young-laplace
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Published Date

24-07-2018

Language

English

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Faculty

Applied Sciences

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.