在设计洪水位下某闸坝的过闸水流流态模拟研究

A Dam Lockage Flow Simulation under Design Flood Level

为了解某闸坝在设计洪水位时的过闸水流流态,采用Flow-3d有限元软件,对该闸坝进行了三维有限元模型的构建,并对过闸水流的下泄流量、自由液面和水深、流速分布、掺气分布及湍动能和能量耗散率等流态变化进行了模拟分析,得出下泄水流随时间的变化、各闸门的下泄流量、不同水深水流的流速分布、掺气分布及湍动能和能量耗散率等流态的变化及分布规律,为闸坝布置、结构等的优化设计提供科学依据,为今后类似闸坝等水工建筑物的设计提供参考。

In order to understand a dam in design flood water level water flow pattern, using Flow -3d finite element software, a dam is built of three- dimensional finite element model and the change of the water flow discharge, free surface and water depth, velocity distribution, air distribu- tion and turbulent energy and energy dissipation rate the change of flow pattern are simulated, the discharge flow changes with time, the gate discharge and different water depth distribution of flow velocity, air distribution and the turbulent kinetic energy and the energy dissipation rate of the change of flow changes and distribution, which provides a scientific basis for the optimization design of gate dam layout, the structure, which provides a powerful reference for the similar design of the dam and other hydraulic structures.