DISCHARGE COEFFICIENTS OF SIDE-WEIRS IN SUPERCRITICAL OPEN-CHANNEL FLOWS

Abstract

Subramanya & Awasthy pointed out that the discharge coefficients are affected by four parameters, i.e., the Froude number, relative flow depth, relative weir height and relative weir length. The discharge coefficients in the previous studies were obtained from the experiments under the condition that the four sets of parameters were not changed systematically, due to it is not easy to conduct such systematic experiments. Recently, it is pointed out that the relative flow depth does not affect on the discharge coefficient so much in comparison with the other parameters. In this study, all four parameters except for the relative flow depth were changed systematically in supercritical open-channel flows with a side-weir. A new discharge coefficient is suggested.