宽尾墩+阶梯溢流坝+消力池的紊流数值模拟

Turbulent Numerical Simulation of Stepped Spillway with Flaring Gate Piers and Plunge Pool

宽尾墩+阶梯溢流坝+消力池一体化的坝面泄流形式是我国科技工作者提出的新型水工设施,已在实际工程中有所应用,但缺少数值计算成果。阐述了针对这种极其复杂的坝面形式进行的数值模拟,计算了设计和正常水位条件下的水力特性和宽尾墩进出口处的紊动能以及耗散率,数值计算结果与试验数据基本吻合。数值计算时单宽过量已达141m3/s·m,对宽尾墩+阶梯溢流坝+消力池一体化的方式有必要进行更深入的研究。

The incorporate energy dissipation of stepped spillway with flaring gate piers and plunge pool is a new-style dam of hydraulic structure proposed by Chinese engineers and has been used in practical projects , but there is a lack of numerical computation results. In this paper, the numerical simulation on the complex dam with stepped spillway , flaring gate piers and plunge pool is presented . Hydraulic property , the turbulent kinetic energy and dissipation rate are calculated for the flaring gate piers entrance under design and normal water level. The computation results are in good agreement with experimental data . Numerical simulation is conducted with unit discharge of 141m3/s. It is necessary to make further study on incorporate energy dissipation of stepped spillway with flaring gate piers and plunge pool .