Leaping Shampoo and the Stable Kaye Effect.

Published 29 months ago

http://www.FreeScienceLectures.com Scientists of the University of Twente in The Netherlands won a prestigious place in the 'Hall of Fame' of videos about fluid-in-motion. They have made a video of leaping shampoo, in which they explain... more

http://www.FreeScienceLectures.com Scientists of the University of Twente in The Netherlands won a prestigious place in the 'Hall of Fame' of videos about fluid-in-motion. They have made a video of leaping shampoo, in which they explain the so-called Kaye effect. A. Kaye in Nature magazine in 1963 wrote "I can offer no explanation for this behaviour." At high-speed recording of 1000 frames per second the following observations were made in 300ms interval: 1) a heap is formed, 2) a streamer ejects, 3) the outgoing jet rises, 4) hits the incoming jet, 5) ends the Kaye effect. What causes the Kaye effect? Streamer ejects through shear-thinning property of fluid. A dimple is formed in the viscous heap. Outgoing jet is thicker quantitatively following continuity. The dimple deepens through a vertical force acting on the viscous heap and the jet rises. The scientists set up a simple energy balance model. It includes viscous dissipation and the sear-thinning behavior less

Tags: high resolution kaye effect shampoo university of twente netherlands fluid in motion heap streamer jet dimple force energy balance model fluid laser light guide