水利学报2024，Vol.55Issue(6)：675-685,11.DOI:10.13243/j.cnki.slxb.20230604
圆紊形墩台尾迹水动力特性开缝控制三维数值分析
Three dimensional numerical analysis of hydrodynamic characteristics of circular pier and abutment wake with slit control
摘要
Abstract
Water flows around hydraulic structures such as gate piers and diversion piers,it results in vortex sepa-rated flow.The three-dimensional wake structure has complex hydrodynamic characteristics,and flow control of vortex separated flow is not only necessary for the optimization design of gate piers,but also related to the efficiency and safety of engineering operation.On the basis of verifying the three-dimensional hydrodynamic mathematical model,this article studies the three-dimensional hydrodynamic characteristics of vortex separation flow and flow control after the circular end pier is slotted.It compares the time-averaged velocity distribution,turbulent flow en-ergy,and turbulence intensity distribution in the longitudinal,transverse,and vertical directions under the seam-less and slotted pier schemes,and explores the hydrodynamic characteristics of the slotted pier.Analysis shows that the water flow structure behind the pier can be significantly improved after the opening of the pier.The closer the opening position is to the middle of the water depth,the greater the suppression of the wake vortex behind the pier,and the better the control of the flow around the pier.The opening of the middle position of the water depth greatly affects the upper and lower water flow behind the slotted pier,making the opening the most influential on the time-averaged flow velocity,and the opening also has the greatest and best suppression on the vortex.To sup-press the adverse effects of vortices behind the piers on the project,the water depth behind the piers and abutments should be determined first in the design of the project,and the opening position should be set as much as possible in the middle of the water depth behind the piers and abutments.关键词
圆紊形墩台/开缝流动控制/湍流动能/旋涡分离流/三维数值模拟Key words
round end pier and abutment/fluid flow slit control/turbulent kinetic energy/vortex separation flow/three dimensional numerical analysis分类
建筑与水利引用本文复制引用
李东风,白福青,方志浩,张红武,胡建永..圆紊形墩台尾迹水动力特性开缝控制三维数值分析[J].水利学报,2024,55(6):675-685,11.基金项目
浙江省自然科学基金项目(LZJWZ22C030001,LZJWZ22E090004) （LZJWZ22C030001,LZJWZ22E090004）
国家重点研发计划项目(2016YFC0402502,2016YFC0402500) （2016YFC0402502,2016YFC0402500）
农村水利水电资源配置与调控关键技术浙江省重点实验室项目(ZJWEU-RWM-202101) （ZJWEU-RWM-202101）
校科研项目(XKY2023012) （XKY2023012）
