Hydraulic Model Studies of an Energy Dissipator for a Fixed Cone Valve at the Ute Dam Outlet Works

摘要

Laboratory studies were made with a 1:8 scale model of Ute Dam outlet works to aid in the development of a basin-type energy dissipator. The existing outlet works is to be modified by installing a horizontal cylinder (fixed-cone) valve structure for controlling the discharge into a concrete outlet channel. Hydraulic model tests of the energy dissipator for the valve discharge revealed problems caused by submergence of the control valve, surging in the energy dissipator, and overtopping in the outlet channel. The preliminary design was modified to reduce submergence and to stabilize the flow in the energy dissipator and outlet channel. (Author)