摘要
为研究水闸消能防冲控制条件的确定方法,以铜城闸实际工程为例,采用数值模拟方法在优选模型的基础上分别选取消能设计工况与消能校核工况的5个闸门开度进行消能防冲计算,通过分析确定过闸最大单宽能量找寻该水闸运行时的最不利工况。模型优选后闸前上游段计算长度选取90 m、防冲槽下游段计算长度选取40 m、网格划分形式选取基于粗网格下的局部加密网格、湍流模型选取RNG k-ε模型,在此模型基础上最终计算分析得出消能设计工况下闸门开度为4.0 m时,过闸单宽能量最大,此工况下上游水位10.1 m,下游水位5.6 m,即为该水闸的消能防冲控制条件。研究内容打破了将水闸泄洪工况作为最不利工况的传统思路,更能保障该水闸的安全运行,具有较好的工程应用价值,能够为同类水闸工程确定消能防冲控制条件提供参考。
In order to study the method of determining the control conditions of energy dissipation and anti-scouring of sluice,the actual project of Tongcheng Sluice is taken as an example.Based on the optimization model,this paper adopted numerical simulation method to select 5 gate openings respectively in the design condition and the check condition of energy dissipation and to calculate the energy dissipation and anti-impact.The maximum single width energy passing through the gate is determined by analysis to find the most unfavorable working condition of the sluice during operation.After the model is optimized,the calculation length of the upstream section of the rear sluice was selected as 90m,the downstream section of the anti-scour slot was 40 m,the mesh division form was the local encrypted mesh based on coarse mesh and the turbulence model was RNG k-ε.Based on this model,the final calculation and analysis shows that,when the sluice opening was 4.0 m under the energy dissipation design condition,the processed energy of the single width of the sluice reached the maximum.Under this condition,the upstream water level was 10.1 m and the downstream water level was 5.6 m,which was the control condition of energy dissipation and anti-scouring of the sluice.The research content of this paper broke the traditional idea of taking the sluice discharge condition as the most unfavorable condition,which can guarantee the safe operation of the sluice.It had good engineering application value and can provide reference for determining the design conditions of energy dissipation and anti-scouring in sluice engineering.
作者
徐波
鲍思曼
江飞龙
夏辉
陆伟刚
XU Bo;BAO Si-man;JIANG Fei-long;XIA Hui;LU Wei-gang(College of Hydraulic Sci and Eng.Yangzhou Univ.Yangzhou 225009,Jiangsu Province,China;Huaian Water Conservancy Survey and Design Research Institute Co.LTD.Huaian 223299,Jiangsu Province,China;Jiangsu Surveying and Design Institute of Water Resources Co.Ld.,Yangzhou 225127,Jiangsu Province,China)
出处
《中国农村水利水电》
北大核心
2024年第11期210-217,226,共9页
China Rural Water and Hydropower
基金
国家自然科学基金(52079120,51779215)。
关键词
水闸
消能防冲
控制条件
模型优选
数值模拟
VOF
sluice
energy dissipation and anti-scouring
control conditions
model optimization
numerical simulation
VOF
