加齿型双向流道过流和输沙性能研究  

Characteristics of flow and Sediment in a Toothed Bidirectional flow Channel

作　　者：王伟峰 唐艳平 王紫阳 杨忠勇[3] 符剑平 王亚林 WANG Wei-feng;TANG Yan-ping;WANG Zi-yang;YANG Zhong-yong;FU Jian-ping;WANG Ya-lin(Changjiang Waterway Survey and Design Institute(Wuhan)Co.,Ltd.,Wuhan 430000,Hubei Province,China;Three Gorges Navigation Administration Yichang 443000,Hubei Province,China;College of Water Conservancy and Environment,Three Gorges University Yichang 443000,Hubei Province,China)

机构地区：[1]长江航道勘察设计院(武汉)有限公司,湖北武汉430000 [2]长江三峡通航管理局,湖北宜昌443000 [3]三峡大学水利与环境学院,湖北宜昌443000

出　　处：《中国农村水利水电》2024年第12期193-199,219,共8页China Rural Water and Hydropower

基　　金：湖北省教育厅科技计划重点项目(D20221206);长江三峡通航管理局委托项目“葛洲坝一号船闸充水阀门度汛对策研究外委技术服务”;重庆市住房和城乡建设委员会科技项目资助(城科字2023第6-14号);湖北省自然科学基金(2022CFB207)。

摘　　要：为研究内齿位置对加齿型双向流道灌水器水力性能和抗堵塞性能的影响,同步优化提出水力性能和抗堵性能均优越的加齿型双向流道灌水器。采用计算流体力学软件Fluent对5种不同加齿型双向流道(含改进后流道结构)的灌水器进行数值模拟计算,分析了不同加齿型双向流道流态指数、水流流速、流道内湍动能、湍动能耗散率分布规律及物理颗粒运动轨迹等。结果表明:内齿位于支流道入口上时,灌水器流态指数最小,同时湍动能耗散率2000~4000 m^(2)/s^(2)区域面积大于后3种方案;通过对比分析4种方案的漩涡区湍动能最小值、沙粒运移路程、沙粒滞留时间,得到方案1内齿位于支流道入口上时,加齿型双向流道抗堵塞性能最优;对方案1内齿结构进行流线型优化改进,进一步提高了加齿型双向流道的水力性能和抗堵塞性能。In order to study the influence of the position of the inner tooth on the hydraulic performance and anti-clogging performance of the toothed bidirectional flow channel emitter,a toothed bidirectional flow channel emitter with superior hydraulic performance and anti-clogging performance was proposed by synchronous optimization.The computational fluid dynamics software Fluent was used to numerically simulate the emitters of five different toothed bidirectional flow channels(including the improved flow channel structure).The flow index,flow velocity,turbulent kinetic energy,turbulent kinetic energy dissipation rate distribution law and physical particle motion trajectory of different toothed bidirectional flow channels were analyzed.The results show that when the inner tooth is located on the inlet of the branch channel,the flow index of the emitter is the smallest,and the area of the turbulent kinetic energy dissipation rate of 2000~4000 m^(2)/s^(2) is larger than that of the other three schemes.By comparing and analyzing the minimum turbulent kinetic energy,sand migration distance,and sand retention time of the four schemes,it is concluded that when the inner tooth of scheme 1 is located on the inlet of the branch channel,the anti-clogging performance of the toothed bidirectional channel is the best.The streamline optimization of the inner tooth structure of scheme 1 is improved,which further improves the hydraulic performance and anti-clogging performance of the toothed bidirectional flow channel.

关 键 词：灌水器 加齿型双向流道 内齿位置 抗堵塞性能 数值模拟 

分 类 号：S275.6[农业科学—农业水土工程]