Non-Newtonian sink flow cusps
Diego Samano, Roberto Zenit
TL;DR
This paper presents visualizations of sharp cusp formations at the interface of viscoelastic liquids during selective withdrawal, revealing diverse shapes similar to those seen behind rising air bubbles in non-Newtonian fluids.
Contribution
It provides visual evidence of cusp shapes in viscoelastic liquids and compares them to bubble rear shapes, highlighting complex interface behaviors.
Findings
Variety of cusp shapes observed
Similarity to air bubble rear in non-Newtonian fluids
Visual documentation of interface dynamics
Abstract
This is an entry for the Gallery of Fluid Motion of the 62st Annual Meeting of the APS-DFD (fluid dynamics videos). This video shows the formation of sharps cusps in the interface of a viscoelastic liquid with air considering a selective withdrawal device. We found that a wide variety of shapes can be observed, similar to those appearing in the rear of air bubbles ascending in non-Newtonian liquids.
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Taxonomy
TopicsRheology and Fluid Dynamics Studies · Fluid Dynamics and Mixing