潘口水电站泄洪洞三维数值模拟

Three-Dimensional Numerical Simulation on Spillway Tunnel of Pankou Hydropower Station

为研究采用数值模拟方法分析岸边泄洪洞水力特性的可行性,采用Fluent商业应用软件对潘口水电站岸边泄洪洞进行了三维数值模拟,得到了泄流能力、典型断面流速、沿程底板压力、水面线及洞顶富余等水力要素的分布特点。数值计算结果与模型试验结果比较表明,两者吻合较好,可见采用数值模拟方法研究潘口水电站泄洪洞的水流特性具有可行性,各种边界条件的设定较为合理,能够模拟出真实情况下的各项水力指标,研究结果对体型优化有一定指导作用。

In order to explore the feasibility of studying hydraulic characteristics of spillway tunnel with numerical simulation, the spillway tunnel of Pankou hydropower station was studied by using three dimensional numerical simulation with commercial software Fluent. Some hydraulic factors was obtained, such as discharge capacity, flow distributions of the typical section, pressure distributions along the bottom, water surface profile and surplus of the roof. And then the calculated results were compared with the model test. The good results show that the numerical simulation method was feasible to study the spillway tunnel flow of Pankou hydropower station; all kinds of boundary conditions are set reasonably and each hydraulic indexes of actual situation can be simulated. The results have a certain guiding role on shape optimization.