The broad-crested weir consider as a hydraulic components frequently used in irrigation as well as in drainage networks and water treatment plants. A rectangular broad-crested weir has various merits where it is essential to determine the measurement of a variety of discharges on natural streams. The laboratory measures used in this study were taken on a rectangular broad-crested weir shape at various flow rates to test the flow pattern above a rectangular broad-crested weir. Furthermore, a formula to calculate the discharge coefficient of rectangular broad-crested weirs is also offered to compare the flow rate obtained by using the weirs with actual flow meter readings. As a result, the outcomes of the study indicated the coefficient of discharge ( ) value increases with increasing the ratio (H/ ) for each flow state.

Keywords- Broad-Crested Weir; Coefficient of Discharge; Hydraulic Structures; Elevation Head.

DOI: http://doi.org/10.24086/ICACE2022/paper.881

Published Date: 01/03/2023