涌泉根灌灌水器螺纹流道水力特性研究  

Study on Hydraulic Characteristics of Helical Path in Bubbled-Root Irrigation Emitter

作　　者：牛文鹏[1] 朱德兰[2] 党思思[1] 王文娥[2] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨凌712100 [2]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《节水灌溉》2011年第12期13-15,共3页Water Saving Irrigation

基　　金：国家高技术研究发展计划("863"计划)(2010AA10A302);农业科技创新专项(CX200909)

摘　　要：针对涌泉根灌灌水原理,提出了一种新型的螺纹式涌泉根灌灌水器,并运用Pro/E三维造型、CFD数值模拟、快速成形及试验验证等方法对该新型灌水器的水力性能进行了研究,得到了不同长度流道的压力流量关系曲线和内部压力、速度分布图。结果表明,该流道水力性能良好,流态指数约为0.5,处于紊流状态,消能形式以局部水头损失为主,试验验证得出的水力特征曲线与数值分析得出的水力特征曲线基本吻合,该研究结果为涌泉根灌产品开发提供了技术支撑。A new kind of emitter with helical path is put forward based on the principle of bubbled-root irrigation. The hydraulic properties of the emitter are studied with the application of the Pro/e software, CFD simulation and rapid prototyping technology. The relationship curve between pressure and flow rate and the distribution of internal pressure and velocity distribution in the channel are obtained. The study results show that the hydraulic performance of helical path is well, and the total head losses is mainly from local losses. In addition, the q-h curve obtained by numerical simulation is approximately consistent with the curve obtained by experiments. This study provides support for the development of bubbled-root irrigation products.

关 键 词：涌泉根灌 螺纹流道 数值模拟 快速成形 水力特征 

分 类 号：S275.8[农业科学—农业水土工程] O315.2[农业科学—农业工程]