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Elementary Mechanics of Turbulent Fluid Motion
註釋Fluids manifest their enormous mobility quite readily in a much more active fashion than we expect them to do prior to experience. Sufficient stirring action brings about a wild and spectacular mode of flowing. The fluid fails then to move in bulk in unitary and harmonious fashion, but the fluid seems to be divided against itself. Various fluid portions go back and forth relative to each other. They revolve with astonishingly large angular velocities about axes in all directions, m and experience deformations far above those suggested by the boundary conditions. These velocities, angular velocities, and rates of distoration are to a considerable degree random in space and time. (More of introduction excluded here).