节水灌溉Issue(1)：24-30,7.DOI:10.12396/jsgg.2025176
加齿型三向流道灌水器水力性能及抗堵性能研究
Study on Hydraulic Performance and Anti-blocking Performance of Toothed Three-way Channel Emitter
摘要
Abstract
The purpose of this study is to explore the influence mechanism of adding a unique inner tooth structure in the flow channel of the three-way flow channel emitter on its performance,so as to optimize the performance of the emitter and improve its performance in practical applications.Methods Using the combination of numerical simulation and physical experiments,the flow field distribution,hydraulic performance and anti-clogging performance of the three-way flow channel were systematically studied by setting different internal tooth structure parameters.Results On the one hand,the inner tooth structure changed the flow path,which reduced the area of low-speed zone and expanded the range of high-speed zone in the branch channel.When the width of tooth a was 0.3 mm and the width of tooth b was 3 mm,the flow index reached the minimum value of 0.468 9,and the flow coefficient and flow index showed a downward trend after adding inner teeth.On the other hand,the anti-clogging performance test shows that the relative discharge showed a fluctuating declining trend but remained above 75%,and the sediment is mainly deposited at the front end of the branch channel.The 10 th irrigation test shows that the inner tooth structure has a negative impact on the anti-clogging performance.The CFD two-phase flow simulation shows that the trajectory of sediment particles is similar,and the vortex is concentrated at the front end of the flow splitter.Conclusion The addition of inner tooth structure can significantly improve the hydraulic performance of the three-way flow channel and optimize the flow field distribution,but it will reduce the anti-clogging performance of the three-way flow channel to a certain extent.This conclusion can provide an important reference for the design improvement of the three-way channel emitter.On this basis,the shape or size of the inner tooth structure can be further optimized to improve the anti-clogging performance while improving the hydraulic performance.关键词
三向流道灌水器/内齿结构/数值模拟/相对流量/水力性能/抗堵性能/迷宫流道结构优化Key words
three-way flow channel emitter/internal tooth structure/numerical simulation/relative flow/hydraulic performance/anti-blocking performance/structural optimization of labyrinth channel分类
农业科技引用本文复制引用
蔚丽娜,刘建交,秦永辉,郭华,李俊嶧,吴红文..加齿型三向流道灌水器水力性能及抗堵性能研究[J].节水灌溉,2026,(1):24-30,7.基金项目
三峡库区生态环境教育部工程研究中心开放基金(KF202302) （KF202302）
三峡库区地质灾害教育部重点实验室开放基金(2022KDZ20) （2022KDZ20）
国家自然科学基金项目(52209164) （52209164）
山东省省级水利科研与技术推广项目(SDSLKY201703). （SDSLKY201703）
