Turbulence examples

Richard Feynman described turbulence as "the most important unsolved problem of classical physics."
Again, without apologies to Swift, Lewis Fry Richardson described the scaling aspects of turbulence this way, "Big whorls have little whorls, which feed on their velocity, And little whorls have lesser whorls, and so on to viscosity."
In the mid 1970s, Benoit developed multifractals as a tool to analyze turbulence. In broad strokes, turbulence occurs when the energy of an eddy is distributed unevenly to its subeddies. Think of different probabilities for IFS transformations.
A picture of familiar turbulence in the flow if water.
A representation of the transition from laminar (smooth) flow to turbulent flow.
Leonardo's representation of whorls within whorls.

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