Flow Characteristics of Triangular Weirs

This paper presents the experimental results about flow characteristics of sharp edged triangular weirs. The data collected in the laboratory for triangular weirs with notch angles θ varying from 10° to 20° and ratio of the height of crest of weir above the channel bed to width of the channel, P/B ratios as 0.166 to 0.500 have been analyzed to study the effects of various parameters on discharge coefficient C_d. The data collected in the laboratory are also analyzed to yield discharge equation. The discharge values computed with developed discharge equation are compared with the measured discharge in the laboratory and it is found in a good agreement.