Abstract:
The available potential flow solution methods over-estimate the number of effective intake for the prediction of critical
submergence in the case of multiple intakes of identical level without partition walls located on the longitudinal line of the canal,
because they cannot establish an upper limiting value for the distance between the centers of the intakes. To address this, tests were
conducted on dual intakes of identical level located on the longitudinal line of the canal in a cross-flow. In practice, by means of the
chart obtained from the experimental results, one can determine the upper limiting value of the distance between the centers of dual
intakes beyond which the effect of the intake on the critical submergence of the other intake is negligible. Such an intake is
considered a non-effective intake and is disregarded in the prediction of critical submergence. In addition, the effective intake relating
to multiple intakes sited in a still-water reservoir is explained.