• Jaydeep Tamkhane
• Jayshree Shelke
• Shamayela Shaikh
• Gauri More
• Dhananjay Desale

This research describes the design and calibration of compound sharp crested (CSC) and compound broad crested (CBC) weirs, consisting of the combination of rectangle, triangle, and trapezoidal shapes. To improve the accuracy of the measurement of the coefficient of discharge of the flow, compound weirs are made up of two regular weir types combined together to form a single weir. A linear combination is developed to illustrate the discharge equation for the compound shapes of the sharp-crested as well as the broad-crested weirs using the standard discharge equations for basic rectangular and triangular weirs that already exist. Weir crest and weir height on the upstream side of the weir are two elements to take into consideration when calibrating compound weirs to determine the coefficient of discharge (Cd). The experimental analytical work was carried out in a laboratory, and from that determination, the coefficient of discharge was calculated for the available compound shapes of the weirs. To validate the analytical results of newly developed weirs, experimentation was carried out in laboratory on hydraulic flume, From the readings noted, Coefficient of discharge (Cd) was calculated for the compound weirs. Different geometries (the combination of shapes and height of the weirs) were tested in order to validate the results of the research and to establish the head-discharge relationship for various compound shapes of weir.

Compound Weir, Sharp-crested weir, Broad-crested weir, Coefficient of discharge

"Calibration of Compound Weirs", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.m177-m186, May-2023, Available :http://www.jetir.org/papers/JETIR2305C26.pdf

"Calibration of Compound Weirs", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppm177-m186, May-2023, Available at : http://www.jetir.org/papers/JETIR2305C26.pdf