摘要
三峡大坝施工过程中,土石围堰及其它水工建筑物将改变原有河道水流结构分布,水动力条件的改变是工程较为关注的问题之一。本文通过曲线网格拟合天然河道边界建立二维数值计算模型,模型经实测资料验证后预测了施工期在典型流量条件下流场的改变,为工程有关实际问题的决策提供了依据。
The earth -rock cofferdam and other hydraulic projects will change the distribution of primary flow structure during the period of construction of Three Gorges Project. The change of hydrodynamic condition is one of concerned problems in this project. In this paper, 2- D numerical computational model is established by curvilinear grids imitating natural river boundary. The model is proved by the measured data and forecasts the change of flow field in condition with typical flux during the process of construction. The model provides scientific basis for decision -making on practical project problems.
关键词
三峡工程
河段
流场
数值模拟
模型
Three Gorges Project, river reach, flow field, curvilinear grid, turbulence model, numerical simulation
