水电能源科学

进/出水口为抽水蓄能电站引导水流和拦截污物的重要组成部分，但其内部流动损失分布规律尚不明确。基于新疆某抽水蓄能电站侧式进/出水口进行CFD模拟，将Liutex涡识别理论和熵产率相结合，阐述了侧式进/出水口的流态特性及其与熵产率间的内在联系，揭示了内流场熵产率与水头损失的分布规律。结果表明，入流工况时，流道内水头损失集中在防涡梁段和扩散段末端，流量较小时熵产率分布主要受內流场的涡结构影响，流量变大后熵产率分布集中在近壁面区域，近壁面能量损失为水头损失的主体部分。研究结果能为抽水蓄能电站侧式进/出水口细部结构优化设计提供依据。

The inlet/outlet is an important component for guiding water flow and intercepting the dirt in pumped storage power stations, but the distribution law of the internal flow head loss is not clear. Based on the CFD simulation of the side inlet and outlet of a pumped-storage plant in Xinjiang, this paper expounds the flow characteristics of the side inlet and outlet and its internal relationship with the entropy production rate by combining the Liutex vortex identification theory with the entropy production rate. The distribution laws of entropy production rate and head loss in the internal flow field have been revealed. The results show that under the inflow condition, the head loss in the flow channel is concentrated at the end of the anti-vortex beam section and the diffusion section. When the flow is small, the distribution of entropy production rate is mainly affected by the vortex structure in the internal flow field, and the distribution of entropy production rate is concentrated in the near-wall area after the flow rate becomes larger, and the energy loss near the wall accounts for the main part. This study can provide the basis for the optimization of the detailed structure of the side inlet and outlet of the pumped storage power station.