Comparative Analysis of energy Losses in the Traditional and Triangular Flip Buckets

In this study the triangular flip bucket instead of circular shaped- with the same character but with different geometries- was studied. In this regard, the performance hydraulic overflow bucket with a bucket instead of the usual triangular shape, were compared in terms of energy dissipation. In this regard, the hydraulic performance triangular shaped bucket instead of the usual bucket, were compared in terms of energy dissipation.To achieve this goal, a physical model of the ogee spillway was built in the hydraulic physical models laboratory of Shahid Chamran University (SCU) and experiments were performed in 4 discharges that followed by four different Froude number. The for each discharge 3 tail-water depth were used to run experiments. The results showed that in comparison to the Total performance energy dissipation in triangle flip bucket with 45-degree angle insignificantly is better than cup flip bucket. For example, energy dissipation in Froude number 3.13 in the case of the free jet in the triangle and cup flip bucket respectively 66.4 and 54.8 percent. The lowest and most energy dissipation respectively related to triangle flip bucket with 22.5-degree angle and Triangle flip bucket with 45-degree angle with 7 cm approach channel. A comparison with results for the circular shaped bucket geometry indicates a favorable behavior of the novel bucket design.