Characteristics of Droplet Pinch-off in Liquid/Liquid Jet Systems
by
Ellen Longmire
in
Mainpulation and Control of Jets in Crossflow, 223-234, 2003.
Category: Journal Article
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Abstract:
Natural and periodically forced jets of waterlglycerin solution were examined as they flowed into an ambient of immiscible Dow Coming 200 fluid. The dynamics of jet pinch off was investigated for jet Reynolds numbers of order 50. Refractive index matching and laser induced fluorescence were employed to obtain clear images of the interface and the jet interior. Planar velocity fields were obtained by particle image velocimetry. The results showed that the pinch off mode, including whether or not satellites form, depends on the viscosity ratio, jet Reynolds number, and jet Strouhal number. Pinch off angles appear relatively insensitive to Reynolds and Strouhal number, but sensitive to the fluid viscosity ratio.
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