大坡度阶梯溢流坝掺气水流水深数值模拟研究  

Numerical Simulation Study of Water Depth of Aerated Water Flow in Large-slope Stepped Overflow Dam

作　　者：王翔宇 刘懿 林鹏程 邵雨辰 谈永锋 Wang Xiangyu;Liu Yi;Lin Pengcheng;Shao Yuchen(Nanjing Water Planning and Designing Institute.Co.Ltd.,Nanjing 210001,Jiangsu;Zhejiang University of Water Resources and Electric Power,Hangzhou 310001,Zhejiang)

机构地区：[1]南京市水利规划设计院股份有限公司,江苏南京210001 [2]浙江水利水电学院,浙江杭州310001 [3]不详

出　　处：《陕西水利》2022年第3期23-25,28,共4页Shaanxi Water Resources

基　　金：国家自然科学基金项目(51109022);大连理工大学海岸和近海工程重点实验室开放基金项目(LP1205)。

摘　　要：大坡度阶梯溢流坝在实际工程中有着非常广泛地使用。由于水流掺气,使得水流运动性质通常与坝型有很大的变化,会对水利工程造成许多有利与不利的影响。研究掺气水流的水深,对解决实际工程问题有着很重要的使用价值。但是掺气水流现象的生成原因非常复杂,研究内容较多,通过运用FLOW-3D软件,从纳维-斯托克斯方程出发,通过将模型分割成许多细小的网格,对每个网格的方程进行联立得出模型的具体水流状态情况。通过数值模拟建立阶梯溢流坝模型,设计坡度为40°、51.3°、60°和70°来进行研究。试验得出随着坡度增加,坝始端到掺气发生点的距离逐渐增长,掺气稳定时的水深逐渐降低。The large-slope stepped overflow dam is widely used in practical engineering. Due to the aeration of water flow, the nature of water flow is greatly changed from the usual dam type, which will cause many favorable and unfavorable effects on hydraulic engineering. Studying the water depth of aerated water flow is of great value in solving practical engineering problems. However, the reason for the formation of aerated water flow is very complex, and the research content is more. By using FLOW-3D software, starting from the Navier-Stokes equation, the model is divided into many fine meshes.The equations of each grid are simultaneously obtained to obtain the specific flow state of the model. The stepped overflow dam model is established by numerical simulation, and the design slopes are 40 °, 51.3 °, 60 ° and 70 °to carry out the model. The test shows that as the slope increases, the distance from the beginning of the dam to the point where aeration occurs gradually increases, and the water depth decreases gradually when the aeration is stable.

关 键 词：阶梯溢流坝 大坡度 掺气水深 数值模拟 

分 类 号：TV322[水利工程—水工结构工程]