Creating corners in kitchen sinks

Clive Ellegaard, Adam Espe Hansen, Anders Haaning, Kim Hansen, Anders Marcussen, Tomas Bohr, Jonas Lundbek Hansen and Shinya Watanabe
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Clive Ellegaard: Center for Chaos and Turbulence Studies, The Niels Bohr Institute
Adam Espe Hansen: Center for Chaos and Turbulence Studies, The Niels Bohr Institute
Anders Haaning: Center for Chaos and Turbulence Studies, The Niels Bohr Institute
Kim Hansen: Center for Chaos and Turbulence Studies, The Niels Bohr Institute
Anders Marcussen: Center for Chaos and Turbulence Studies, The Niels Bohr Institute
Tomas Bohr: Center for Chaos and Turbulence Studies, The Niels Bohr Institute
Jonas Lundbek Hansen: Center for Chaos and Turbulence Studies, The Niels Bohr Institute
Shinya Watanabe: Center for Chaos and Turbulence Studies, The Niels Bohr Institute

Nature, 1998, vol. 392, issue 6678, 767-768

Abstract: Abstract When a vertical jet of liquid from a nozzle hits a flat surface, as in tap water striking the kitchen sink, a discontinuity appears in a ring created by the flow. At this deformation the depth of the water alters abruptly (the ‘circular hydraulic jump’1,2,3,4,5) at some distance from the jet. We have now discovered that if the jet contains a liquid more viscous than water, stationary polygonal patterns form, breaking axial symmetry. The sharp corners of the polygons carry a large radial flux, while the sides generate resistance to the stream.

Date: 1998
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DOI: 10.1038/33820

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