ABSTRACT

Energy dissipation at dams and weirs is closely associated with spillway design, particularly with the chosen specific discharge q, the difference between the upstream and downstream water levels (H*) and the downstream conditions. Chapter 4 dealt mainly with the actual spillway inlet works and certain standard types of conduits conveying the flow from the spillway inlet, i.e. chutes, tunnels, etc. In this chapter the main concern is the concept of energy dissipation during the whole passage of the flow from the reservoir to the tailwater and, in particular, the stilling basin (energy dissipator) design.