Nanang Saiful Rizal, Mohammad Bisri, Pitojo Tri Juwono, Very Dermawan
Tyrol weir with a circular sieve hole is very effective in preventing sediment entry and has a channel collection capacity between 30% up to 40%. However, in the determination of the discharge coefficient (Cd) is still the use of equations not from the results of research on the hole sieve circle. The purpose of this study is to find the value of the coefficient of discharge (Cd) on the hole in the form of a circle by considering the factor of diameter and the distance between holes. The method is to test the physical model in a laboratory that connects several factors using three variations of slope and 10 variations of flow discharge. The discharge coefficient (Cd) increases with the higher slope of the filter (θ) and the larger the ratio of the hole area to the filter area (a / d). At the sub-critical flow conditions the value of the debit discharge coefficient (Cd) is between 0.12 - 0.24, whereas in the super critical flow the value of the debit coefficient (Cd) is between 0.18 - 0.32. © IAEME Publication
Department of Civil Engineering, University of Muhammadiyah Jember, Jl. Karimata 49, Jember, 68121, Jember, Indonesia; Department Of Water Resources Engineering, Brawijaya University, Jl. Veteran, Kota Malang, 65145, Indonesia
