Abstract
The control of a hydraulic jump by both thin-crested and broad-crested sills in a U-shaped channel is examined theoretically and experimentally. Under certain simplifications, the theoretical development results in explicit relations for the relative sill height, by including the effect of approach velocity. This also leads to a similar condition for the control by a sill in the rectangular channel, by extension of the Forster and Skrinde approach. A particular study is presented to define the conditions required for the minimum height of a broad-crested sill. Finally, the relative length of jump is quantified by accounting for the relative depth of the approaching flow.
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