摘要
为研究改进型双向流流道滴灌灌水器水力性能及其与结构参数之间的关系,利用正交试验设计法,取灌水器的6个结构参数作为因素,形成25组方案,在0.05~0.25 MPa 5个不同压力下,进行水力性能测试。结果表明,25组方案流态指数为0.401~0.498,0.10 MPa时的最小流量为1.50 L/h,其水力性能良好,且流量相对较小。极差分析结果显示,挡水件与流道上壁间夹角α对流态指数影响最大,且呈正相关;利用回归分析,建立6个结构参数与流态指数间的回归模型,结果显示其相关性良好;试验验证表明,该回归模型能较准确地预测流态指数,实现了改进型双向流流道参数化设计,并对其结构优化具有一定的理论参考。
In order to study the hydraulic performance of improved bidirectional drip irrigation emitter and the influence of its structural parameters on the hydraulic performance,the orthogonal experimental design method is adopted,and 6 structural parameters of emitter are taken as factors,to form 25 groups of schemes,and hydraulic performance tests are carried out under 5 different pressures ranging from 0.05~0.25 MPa.The results show that the flow index of 25 schemes is 0.401~0.498,and the minimum flow at 0.10 MPa is 1.50 L/h,which has good hydraulic performance and relatively small flow.The results of range analysis show that the angleαbetween the water retaining device and the upper wall of flow channel has the greatest influence on the flow index,and there is a positive correlation;Using regression analysis,the regression model between 6 structural parameters and the flow index is established,and the results show that the correlation is good;The experimental verification shows that the regression model can accurately predict the flow index.This realizes the improved bidirectional flow channel parametric design,and has a certain theoretical reference for its structure optimization.
作者
李嘉露
周颖明
史可梅
LI Jia-lu;ZHOU Ying-ming;SHI Ke-mei(Shaanxi Huadi Survey and Design Consulting Co., Ltd., Xi'an 710018, China)
出处
《中国农村水利水电》
北大核心
2020年第7期108-112,共5页
China Rural Water and Hydropower
基金
国家自然科学基金资助项目(51279156)。
关键词
改进型双向流流道
滴灌灌水器
参数设计
水力性能
回归分析
improved bidirectional flow channel
drip irrigation emitter
parametric design
hydraulic performance
regression analysis
作者简介
李嘉露(1994-),女,硕士研究生,主要从事节水灌溉技术研究,E-mail:841388545@qq.com。
