摘要
为模拟南京市三汊河河口闸附近水流流态,探究河口闸单孔开启的可行性,采用Delft 3D软件建立大范围水深平均模型和局部三维数学模型,对三汊河河口附近水流流态进行数值模拟,研究最不利水位工况下的水流流态,并确定了闸孔不同运行模式对流速分布的影响范围。进一步地,将河道底面流速与研究范围内泥沙起动速度进行比较,获得了河口闸附近河道冲刷与淤积范围的分布情况。研究成果可为研究河口闸单孔开启提供依据。
In order to simulate the flow pattern near the Sanchahe estuary sluice in Nanjing City and explore the feasibility of opening a single hole of the sluice,Delft 3D software was used to establish a large-scale water depth average model and a local three-dimensional mathematical model.Then the flow pattern near the Sanchahe estuary sluice was numerically simulated,the flow pattern under the most unfavorable water level condition was studied,and the influence range of different operation modes of the sluice on the velocity distribution was determined.Furthermore,by comparing the flow velocity at the bottom of the river with the sediment incipient velocity in the study area,the distribution of the deposition-erosion range of the river near the estuary gate was obtained.The research results can provide a basis for the study of single hole opening of the estuary sluice.
作者
谢昕卓
陈伟
杨明强
王璐
杨菲菲
蔡新
XIE Xinzhuo;CHEN Wei;YANG Mingqiang;WANG Lu;YANG Feifei;CAI Xin(Collage of Mechanics and Materials,Hohai University,Nanjing 211100,China;Nanjing Sanchahe River Gate Management Office,Nanjing 210036,China)
出处
《人民长江》
北大核心
2021年第7期153-159,167,共8页
Yangtze River
基金
南京市水务科研项目(201804)。
关键词
水闸运行方式
水流流态
流速分布
Delft
3D模型
河道冲淤
三汊河河口闸
operation mode of sluice
flow pattern
velocity distribution
Delft 3D model
river deposition-erosion
Sanchahe estuary gate