Sill-controlled energy dissipator

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Abstract
The effect of a continuous, transverse sill on the hydraulic jump in a rectangular channel is analysed. Based on the results pertaining to the classical jump, the sill-controlled jump may be shown to correspond to a perturbed classical jump, particularly as regards the overall jump pattern. A novel normalisation procedure is introduced by referring to the roller length of classical jump. Further, the two- and three-dimensional flow patterns are discussed. The design procedure involves both the hydraulics and the erosion sensitivity of tailwater bed.

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