Numerical Simulation Research on the Diversion Characteristics of a Trapezoidal Channel

Open-channel bifurcations are the most common water diversion structures in irrigation districts. In conveyance, transport efficiency and sedimentation primary concerns. This study accordingly analyzes influence of open-channel on delivery areas. Herein, three-dimensional flow at an bifurcation was studied via numerical simulations using FLOW-3D software including 15 sets working conditions. The hydraulic characteristics recirculation zone vicinity were analyzed. Equations for width surface bottom layers trapezoidal channel then obtained. widths along depth found to differ between rectangular channels. results also show that considerably velocity main channel. small, but pulsation turbulent kinetic energy large. dissipated this area relatively large, which not conducive delivery. provides a reference optimization operation management