A ‘bathtub drain vortex’ forms when two water bottles are connected vertically. The surface of the vortex is visualized by red lamp oil.

A ‘bathtub drain vortex’ forms when two water bottles are connected vertically. The surface of the vortex is visualized by red lamp oil.

FlowVis@CU
2015, 2015 Team First, Bathtub Drain, Flow Categories, Flow Vis Techniques, Images, Marked Area, Media, Rheoscopic Fluid, Vortex Side View, Vortexes, z Class & Assignment

By Yusen Ji for Fall 2015 Team First.
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A horizontal soap bubble film drains towards its center, while nonuniformities from undissolved sugar crystals create colored patterns as the film thickness varies.
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The Saffman-Taylor instability in a Hele Shaw cell resulted from dyed milk (blue, then yellow) injected into a clear liquid detergent.

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