Author(s): Michael Buchko; Paul Kolkman; Kristian Pilarczyk
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Abstract: Two dim ensional sand erosion tests in a closed water tunnel (velo cities up to 2 m/s) produced a scour hole downstream a sill or a flat bottom protection, the slope of the scour hole being independent of flow velocity, partially dependent on scale and wholly dependent on grain size and gradation and sill geometry. The tractive forces of single grains and liquefaction are the mechnanisms scour.
Year: 1987