某抽水蓄能电站侧式进/出水口体型优化数值模拟

Numerical Simulation of Side Inlet/Outlet Optimization of Pumped-storage Station

对某抽水蓄能电站侧式进/出水口进行三维数值模拟,发现原体型存在不利水流现象。通过将扩散段底板坡度6%调整为2%,得到优化体型,以期望满足水力学要求。优化体型计算结果表明,减小扩散段底板坡度对进/出水口的水流流态、拦污栅断面的流速分布和不均匀系数、进出水口的水头损失等均有一定的改善作用。

3D numerical simulation was carried out for the side inlet/outlet of pumped-storage station. The research results showed that its original shape was a disadvantage to water flow. The existing shape could be optimized by changing 6 % bottom slope of the diffusion section to 2 %, which might satisfy the requirement for hydraulics. The above calculation results indicated that the decrease of bottom slope of the diffusion section improved flow pattern of inlet/outlet, water head loss of inlet/outlet, flow velocity distributed on water screen section and the non-uniformity coefficient to a certain extent.