Nov 10 – 11, 2021
Hotel Mercure Budapest Castle Hill
Europe/Budapest timezone

Laboratory observation of water surface polygon vortices

Nov 10, 2021, 4:00 PM
Hotel Mercure Budapest Castle Hill

Hotel Mercure Budapest Castle Hill

1013 Budapest, Krisztina Körút 41-43


Adam Kadlecsik


It is a known phenomenon, when a filled bucket is rotated around its axis the water surface takes up a paraboloid shape. A less trivial instance is when only the bottom of the bucket rotates, and the walls are stationary. In this case between the liquid near the rotating bottom and the stationary wall a velocity shear emerges creating rotating polygon-like shapes. We reproduce this phenomenon and build a physical understanding around it.

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