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arXiv · 0707.1721

The Bouncing Jet: A Newtonian Liquid Rebounding off a Free Surface

Matthew Thrasher·Sunghwan Jung·Yee Kwong Pang·Chih-Piao Chuu·Harry L. Swinney
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Abstract

We find that a liquid jet can bounce off a bath of the same liquid if the bath is moving horizontally with respect to the jet. Previous observations of jets rebounding off a bath (e.g. Kaye effect) have been reported only for non-Newtonian fluids, while we observe bouncing jets in a variety of Newtonian fluids, including mineral oil poured by hand. A thin layer of air separates the bouncing jet from the bath, and the relative motion replenishes the film of air. Jets with one or two bounces are stable for a range of viscosity, jet flow rate and velocity, and bath velocity. The bouncing phenomenon exhibits hysteresis and multiple steady states.

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Matthew Thrasher, Sunghwan Jung, Yee Kwong Pang, Chih-Piao Chuu, Harry L. Swinney. 2007-07-11. The Bouncing Jet: A Newtonian Liquid Rebounding off a Free Surface. https://doi.org/10.1103/physreve.76.056319

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