永乐电站调压室模型试验

结合具体的模型试验，对长引水隧洞引水系统的变态模型设计进行了研究，特别对阻力相似条件进行了分析，指出在变态模型设计中，也可以同时满足沿程阻力相似和局部阻力相似。并给出相应的涌波试验结果，此外，对隧洞至调压室过渡段的流道体型、分流墩形式进行了优化设计，从而改善了流态，减少了水头损失。

Model Test of Surge Chamber for Yongle Hydropower Station

According to the specific model test ,this paper studies the design of distorted model for long-distance diversion systems.In particular,it analyzes the similarity condition of resistance and p oints out that even in the distorted model design,the simultaneous similarity satisfaction of local resistance and frictional resistance is practical.And the corresponding test results of the surge are provided.In the meantime ,optimum design of flow passage and flow distribution pier in the conjunction of the tun nel and chamber is carried out ,which improves the flow pattern and decreases t he head loss