Bouncing liquid jets

xantox, 19 July 2007 in News

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Physicists from the University of Texas at Austin found 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”.1

Bouncing liquid jets

  1. M. Thrasher, S. Jung, Y. Kwong Pang, C. Chuu, H. L. Swinney, “The Bouncing Jet: A Newtonian Liquid Rebounding off a Free Surface“, arXiv:0707.1721v1 [physics.flu-dyn] (2007). []

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