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

Abstract

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

Keywords

• dynamic pressure
• plunge pool
• rectangular jet
• tailwater depth