Leaping Shampoo And The Stable Kaye Effect

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[Leaping Shampoo And The Stable Kaye Effect]

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A thin stream of shampoo is poured from a height of 20 cm and recorded with a video camera. This is known as the Kaye effect. I can offer no explanation for this behavior. A high-speed recording of the Kaye effect at 1000 frames per second.

Observations:

- a heap is formed

- a streamer ejects

- the outgoing jet rises

- hits the incoming jet

- ends the Kaye effect

total time 300 ms

What causes the Kaye effect?

A detailed look

Streamer ejects through shear-thinning property of the fluid.

A dimple is formed in the viscous heap.

Outgoing jet is thicker quantitatively following continuity.

Dimple deepens through a vertical force acting on the viscous heap and the jet rises.

We set up a simple energy balance model.

It includes viscous dissipation and the shear-thinning behavior of the shampoo in the dimple structure.

Elastic properties of the fluid play no role.

The model predicts the leap height of the shampoo as a function of the release height.

It even predicts a critical release height as observed in experiment.

For details see JSTAT / 2006 / P07007

To prevent the outgoing jet from interfering with the incoming jet the surface was tilted.

Soap source.
Soap-film source.
Slide.
Collector.

leading to a stable Kaye effect cascade.

leaping shampoo may even act as a light guide for laser beams in a multitude of colors.

Special thanks to:

G.W. Bruggert
M. Hazelman
A. Van Der Bos

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Leaping Shampoo And The Stable Kaye Effect. A thin stream of shampoo is poured from a height of 20 cm and recorded with a video camera. This is known as the Kaye effect. Complete Full Transcript, Dialogue, Remarks, Saying, Quotes, Words And Text.