Giant Vortex Video

Most people will be familiar with the vortex that appears when they take the plug out of a bath but can this happen on a much larger scale? This footage taken in Lake Texoma last year shows such a giant vortex produced as a result of controlled draining to lower water levels. Vortices more generally are seen whenever a fluid rotates around an axis and can appear in everything from a stirred cup of coffee to a tornado. They play a big part in turbulent flow where unsteady vortices at various scales interact to cause chaotic motion.

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