水闸冲刷问题是水利工程中普遍存在的问题，诸多研究人员对该问题进行了系统地研究，研究结果显示使用汽车的废旧轮胎对海漫段增大糙率，可以起到减少冲刷的作用。通过对比分析不同的湍流模型、数值计算方法、网格划分尺度、壁面处理方法，最终采用RNG k-ε湍流模型、PISO算法，将整个流场划分为67.27万网格，选择标准壁面函数对流场进行模拟计算。计算结果与模型试验实测结果吻合较好，说明模型能更好地用于加糙后的流场模拟计算。

Erosion of sluice is a common problem in water conservancy projects. Many researchers have conducted systematic studies on this problem. The results showed that application of scrap tires was an effective approach to increase the roughness of apron and thus reduce erosion. By comparison and analysis of the different turbulence models, numerical methods, grid scale and wall surface methods, finally the RNG k-ε turbulence model and PISO algorithm were used, the whole flow field was divided into 672700 grids, and standard wall functions were used to deal with the boundary condition to calculate the flow field of scrap tires in energy dissipation and erosion control under sluice. The calculation results were in good agreement with the model test results, indicating that the model could be used to the flow field with enhanced roughness.

国家自然科学基金项目 (50169001)；咸阳职业技术学院院级科研基金项目（2013KYB05）