水科学进展2017，Vol.28Issue(5)：729-737,9.DOI:10.14042/j.cnki.32.1309.2017.05.010
深尾水消力池非完全宽尾墩消能试验研究
Study on incompletely flaring gate pier energy dissipation in deep tail water stilling basin
摘要
Abstract
In order to solve the engineering problems of secondary hydraulic jump and downstream river bed erosion due to insufficient energy dissipation in deep tailwater stilling basin, this paper compares the stilling basin flow fields of flat gate pier, conventional flaring gate pier and incomplete flaring gate pier based on the physical and numerical models. Results show that through increasing velocity gradient and lateral water level gap between adjacent chambers, the incomplete flaring gate pier can promote the lateral diffusion and collision of water jets to form growing vertical vor-tex from bottom to surface in the upper regions of stilling basin. This would significantly intensify energy dissipation to reduce the outgoing velocity, and completely solve the common hydraulic problems in deep tailwater stilling basin.关键词
宽尾墩/横向扩散/二次水跃/立轴旋滚/深尾水消力池Key words
flaring gate pier/lateral diffusion/secondary hydraulic jump/vertical axis/deep tailwater stilling basin分类
建筑与水利引用本文复制引用
周招,王均星,梁砚,张文传..深尾水消力池非完全宽尾墩消能试验研究[J].水科学进展,2017,28(5):729-737,9.基金项目
国家自然科学基金资助项目( 51479145) The study is financially supported by the National Natural Science Foundation of China ( No. 51479145) . （ 51479145）
