Author(s): W. H. Hager

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Abstract: Based on the results of a first study, the present investigation considers discharge characteristics of a local, discontinuous contraction in a rectangular channel for submerged flow conditions. The theoretical approach analyses the separation zone as well as the local head-loss along the contraction by accounting for the contraction ratio, the inlet angle and the relative contraction length. General solutions are obtained by a matching procedure, and design relations are established. The results are compared with observations, and a good agreement is found.

DOI: https://doi.org/10.1080/00221688709499298

Year: 1987