FLUID MECHANICS - DYNAMICS OF FLUIDS - VORTICIES NC State University Faculty Access

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Tornado Tube
# 2C50.30


Description: Two cola bottles are connected, one filled with water. After being turned upside down, only a small amount of water flows into the lower bottles because of the reduced pressure above. By swirling the upper bottle in circles, water begins to pour again and a vortex is created.

Parts: 2 two liter bottles and vortex connector.

Purchased/Built: purchased

Setup Time: 5 min

Quant. in Demo Room: 1

Demo References
The Video Encyclopedia of Physics Demonstrations Disc 13-09 Couple two soft drink bottles with the commercial tornado tube coupler and spin the top bottle so the water forms a vortex as it drains into the bottom bottle.
Freier and Anderson Fp-2 A vortex forms in a large cylinder on a magnetic stirrer.

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