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2013 Lubbock Lecture - Phoenics

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26/35. Turbulence trends:The Stafford experiment<strong>Lubbock</strong>,TexasOct 18 <strong>2013</strong>Applications of CFDFill the lower half of a glass-sided vesselwith coloured salty water, and the tophalf with clear fresh water.Connect electrodes to a battery.The salty water heats more rapidly than thefresh. The consequent Rayleigh-Taylorinstability causes mixing.Soon the vessel appears to be filled withcoloured fluid.Quickly switch off the current; then the two fluids startto un-mix!In the end, the original sharp interface is restored.

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