The plane, free overfall is treated by using extended energy and momentum equations taking account of the streamline inclination and curvature. The end‐depth‐ratio is estimated by momentum considerations in the brink and the upstream sections. Distinction is made between pressure head and flow depth which coincide only for parallel, horizontal streamlines. The surface profiles for the up‐ and downstream zones of the brink section are investigated. Compared with known, laborious calculation procedures, the present computations allow fair and simple determination of all flow quantities.
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Willi H. Hager (1983) studied this question.
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