Effect of Tailwater Depth on Dynamic Pressure Due to Impact of Flip Bucket Jets

Application of Flip Bucket in dams, in comparison with other structures needs more research due to fact that the forces that Jet stream inflicts in their collision place to downstream bed lead to scour or fracture of floor slab. Characteristics of dynamic pressure on collision place in various conditions will enable us to determine probability of scouring and exact amount of it, in case of such circumstances in administrative structures, and also it is possible cracking of the downstream slab floor or to determine the stage of particles separation from bed which is important in design of plunge pool. In this study, with providing conditions to measure the dynamic pressure created on the floor due to the collision of flip bucket jet trying to extract data in different conditions from discharge jet output and depth. The results suggest that the plunge pool downstream of Flip Bucket jets will be effective when ratio of water depth on the thickness of the jet is greater than 3. is greater than 3.