抽水蓄能电站侧式进出水口体型优化的数值模拟

Numerical Simulation of Shape Optimization of Flank Inlet-outlet for Pumped Storage Power Station

鉴于抽水蓄能电站进出水口因有进水和出水的双向水流,其体型对电站运行的影响较常规电站大,以某抽水蓄能电站为例,通过建立三维水动力数学模型,运用CFD软件对电站进行数值模拟,发现该电站不能达到工程设计需要,进而对导流隔墩尾部位置及中孔和边孔的扩散角进行了优化调整,对比分析了优化前后不同水位条件下发电和抽水时的水流和水头损失情况。结果表明,优化方案解决了原体型分流不均的问题,并减小了水头损失。

In the inlet-outlet position of pumped storage power station, there are more complex hydraulic conditions because of double flow directions. Three-dimensional hydrodynamic mathematical model is established and the power station was numerically simulated by using CFD software, It finds out that the power station can not meet the requirement of engineering design. Through the adjustment to the position of guide piers and diffusion angle of middle hole and side hole, flow and head loss before and after optimization is comparative analysis under different water conditions when power generation and pumping. The results show that optimization scheme solved the problem of the original size distribution inequality and reduced the loss of the head.