侧槽式溢洪道进口水流条件优化数值模拟

Numerical Simulation of Optimization of Inlet Flow Conditions of Side Channel Spillway

为改善实际工程中侧槽式溢洪道的水流形态,以某实际水库工程为例,结合物理模型试验,通过数值模拟,比较了溢洪道进口侧边结构采用局部削坡、弧形垂直翼墙、变坡翼墙等方案,通过观察进口水流流态、流速、漩涡、紊动能及水面变化等水力学特征,发现采用弧形垂直翼墙的方案可减缓进口的不利流态,达到进口水流平稳的目的,可为类似工程提供参考。

In order to improve the water flow state of the side channel spillway in the actual project, taking a practical reservoir project as an example, combined with the physical model test, the schemes of partial slope cutting, arc vertical wing wall and variable slope wing wall were compared through numerical simulation. By observing the hydraulic characteristics such as the inlet flow pattern, velocity, vortex, turbulence kinetic energy and water surface change of the inlet water, it is found that the scheme of using the arc vertical wing wall can slow down the unfavorable flow state at the inlet and achieves the purpose of stabilizing the inlet water flow, which can provide a reference for similar projects.