农业机械学报2011，Vol.42Issue(9)：64-68,73,6.
迷宫流道偏差量对灌水器水力性能及抗堵塞性能的影响
Influence of the Offset of Labyrinth Channels of Drip Emitters on Hydraulic and Anti-clogging Performance
摘要
Abstract
The influence of offsets ( -0.25 mm, 0, 0. 25 mm, 0. 50 mm ) of dental labyrinth channels of drip emitters on hydraulic and anti-clogging performance was studied by the following methods; there were numerical simulations carried out for the liquid-phase flow and the liquid-solid two-phase flows in the flow field by the CFD program Fluent, and the samples were tested. The obtained results showed positive relationship between offset and discharge coefficient, and negative relationship between offset and flow state exponent. With the increasing of the offset of emitters, the anti-clogging ability declined. Thus, combining the hydraulic and anti-clogging performance, under the condition of adequate flow state exponent, it put forward a suggestion that reducing the offset as much as possible to enhance the anti-clogging performance.关键词
灌水器/迷宫流道/水力性能/抗堵塞性能/偏差量Key words
Emitters/ Labyrinth channels/ Hydraulic performance/ Anti-clogging ability/ Offset分类
农业科技引用本文复制引用
喻黎明,吴普特,牛文全..迷宫流道偏差量对灌水器水力性能及抗堵塞性能的影响[J].农业机械学报,2011,42(9):64-68,73,6.基金项目
国家高技术研究发展计划(863计划)资助项目(2011AA100507) （863计划）
