TY - JOUR AU - Hossein Elahifar, AU - Omid Tayari, AU - Najme Yazdanpanah, AU - Mehdi Momeni, PY - 2022/07/27 Y2 - 2024/03/29 TI - Experimental investigation of the discharge coefficient of labyrinth weirs with asymmetric cycles JF - Water SA JA - WSA VL - 48 IS - 3 July SE - Research paper DO - 10.17159/wsa/2022.v48.i3.3911 UR - https://watersa.net/article/view/14446 SP - AB - <p>This&nbsp; study investigated the discharge coefficient in asymmetric rectangular labyrinth weirs. A dimensional analysis was carried out which showed that the discharge coefficient is a function of dimensionless parameters, such as the ratio of asymmetric widths of left and right cycles (<em>w</em><sub>L</sub>/<em>w</em><sub>R</sub>), the ratio of the total hydraulic head to the weir height (<em>H</em><sub>t</sub>/<em>P</em>), and the weir length ratio (<em>B</em>/<em>w</em><sub>avg</sub>). The experimental results for the discharge coefficient were found to decline as <em>w</em><sub>L</sub>/<em>w</em><sub>R</sub> increased or <em>B</em>/<em>w</em><sub>avg</sub> decreased. For <em>w</em><sub>L</sub>/<em>w</em><sub>R</sub> = 1.19, the ratio <em>B</em>/<em>w</em><sub>avg</sub> = 2.76 improves the discharge coefficient by nearly 12.7% compared to <em>B</em>/<em>w</em><sub>avg </sub>= 3.1. For <em>w</em><sub>L</sub>/<em>w</em><sub>R</sub> = 1.42, the ratio <em>B</em>/<em>w</em><sub>avg </sub>= 2.76 improves the discharge coefficient by nearly 34.2% compared to <em>B</em>/<em>w</em><sub>avg</sub> = 3.1. For <em>w</em><sub>L</sub>/<em>w</em><sub>R</sub> = 1.70, the ratio <em>B</em>/<em>w</em><sub>avg </sub>= 2.76 improves the discharge coefficient by nearly 30% compared to <em>B</em>/<em>w</em><sub>avg </sub>= 3.1.</p> ER -