干旱地区农业研究2024，Vol.42Issue(1)：270-277,8.DOI:10.7606/j.issn.1000-7601.2024.01.28
分叉角与回转半径对双向流道灌水器水力性能影响模拟研究
Simulation study on influence of fork angle and turning radius on hydraulic performance of bidirectional channel emitter
摘要
Abstract
In order to study the hydraulic performance of bidirectional channel emitter,its structural unit was taken as the research object,with two structural parameters,fork angle and turning radius were used as the influen-cing factors.The orthogonal experimental design method was used to design 16 kinds of structural parameter combi-nation schemes.The flow state of the fluid inside the flow channel was simulated by the computational fluid dynam-ics software Ansysfluent,and the regression model of the flow channel structure parameters and the local head loss of the flow channel unit was established by dimensional analysis.The results showed that the local head loss was re-lated to the fork angle,turning radius and flow velocity,the fork angle was negatively correlated with the local head loss,and the turning radius and flow velocity were positively correlated with local head loss.When the inlet flow ve-locity was fixed,the fork angle was 32.4° and the turning radius was 1.72 mm,the local loss of the runner unit was the largest.When 10 channel units were set,the flow index of the emitter with cross arrangement was better.关键词
滴灌灌水器/双向流道/局部水头损失/数值模拟/量纲分析Key words
drip irrigation emitter/bidirectional flow channel/local head loss/numerical simulation/dimen-sional analysis分类
农业科技引用本文复制引用
王亚林,符剑平,吕从聪,钟韵,朱士江..分叉角与回转半径对双向流道灌水器水力性能影响模拟研究[J].干旱地区农业研究,2024,42(1):270-277,8.基金项目
国家自然科学基金(52209164) （52209164）
湖北省教育厅科技计划重点项目(D20221206) （D20221206）
湖北省水利重点科研项目(HBSLKY202121) （HBSLKY202121）
三峡库区地质灾害教育部重点实验室开放基金(2022KDZ20) （2022KDZ20）
