水库正堰与侧堰联合泄流的三维数值模拟

3-D Numerical Simulation for Reservoir Water Discharge Together with Positive Weir and Side Weir

结合某水库泄流水工模型试验研究成果,采用CFD软件对正堰与侧堰联合方式泄流进行数值模拟。对实际工程泄流流态、水位、流速等的模拟研究与物理模型试验结果进行对比,拟合较好。对不同侧堰堰顶高程的模拟分析表明,侧堰泄流对正堰泄流有影响。研究结果表明:当侧堰堰顶高程较低时,侧槽出口形成的冲击波较强。此研究成果可为实际工程提供参考。

Combining with the hydraulic model experiment’s research results of the water discharge in a reservoir ,the CFD software was adopted for the numerical simulation of positive weir and side weir discharging together .The actual project’s numerical simulation results for the discharge flow pattern ,water level ,flow rate and so on were compared with the results of model experiments ,which were better in fitting .The simulation and analysis for different side weir crest elevation show that the side weir discharge has influence on positive weir discharge .The results indicate that while the side weir crest elevation is lower ,the shockwave formed in side groove’s outlet is stronger .This research result can provide a reference for actual projects .