纵向结构优化下组合微喷带喷洒均匀度模拟研究  

Simulation Study on the Uniformity of Combined Micro Spray Types Under Longitudinal Structure Optimization

作　　者：李道西 刘欢 高世凯 李彦彬 LI Dao-xi;LIU Huan;GAO Shi-kai;LI Yan-bin(College of Water Resources,North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]华北水利水电大学水利学院,郑州450046

出　　处：《节水灌溉》2024年第9期47-52,共6页Water Saving Irrigation

基　　金：黄河流域综合干旱时空动态仿真模拟及其对碳循环的作用机制(42301024)。

摘　　要：为探究纵向结构优化条件下组合微喷带的最优铺设间距,以折径42mm,总长40m的斜3孔与斜5孔微喷带为供试对象,开展单根微喷带喷洒水分布强度规律试验。并在此基础上,利用3次样条插值法插值出每个集水点的喷洒水分布强度。在插值完成后,叠加出两根相同的微喷带在不同组合间距下各个集水点的喷洒水分布强度,利用喷洒水分布强度等值线图与喷洒均匀度对叠加结果进行分析。结果表明:3次样条插值法对微喷带喷洒水分布强度的插值误差小于7%。通过结构优化能增大微喷带末端喷洒水分布强度与喷洒均匀度。采用长度为1∶1的结构优化比例,以及1.45R的组合间距,能让组合喷洒均匀度达到69.1%。To explore the optimal spacing for combined micro spray tapes under the conditions of longitudinal structural optimization,singleroot micro spray tapes with a folded diameter of 42mm and a total length of 40m,including slant 3-hole and slant 5-hole types,were selected for experimental testing of water distribution intensity.Subsequently,using the cubic spline interpolation method,water distribution intensity at each collection point was interpolated from the experimental data.After interpolation,the water distribution intensity of two identical micro spray tapes was superimposed for different combination spacings.The results were analyzed using contour maps of water distribution intensity and uniformity.The findings indicate that the interpolation error of the water distribution intensity using the cubic spline method is less than 7%for micro spray tapes.Structural optimization enhances the water distribution intensity and uniformity at the end of the micro spray tape.Utilizing a structural optimization ratio of 1∶1 and a combination spacing of 1.45 R achieves a maximum uniformity of 69.1%for combined spraying.

关 键 词：微喷带 结构优化 均匀度 

分 类 号：S275.5[农业科学—农业水土工程]