文献类型： 外文期刊

作者： Wang, Haitao ¹ ; Wang, Jiandong ¹ ; Yang, Bin ³ ; Mo, Yan ³ ; Zhang, Yanqun ³ ; Ma, Xiaopeng ⁴ ;

作者机构： 1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, 12 South Zhongguancun Rd, Beijing 100081, Peoples R China

2.China Agr Univ, Coll Water Resources & Civil Engn, 17 East Tsinghua Rd, Beijing 100038, Peoples R China

3.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, 20 West Chegongzhuang Rd, Beijing 100048, Peoples R China

4.Xinjiang Acad Agr Sci, Inst Soil Fertilizer & Agr Water Saving, 403 Nanchang Rd, Urumqi 830091, Peoples R China

关键词： Venturi injector; Maximum injection rate; Simulation; Machine learning algorithms; Optimal combination

期刊名称：JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING （ 影响因子：1.879； 五年影响因子：1.985 ）

ISSN： 0733-9437

年卷期： 2020 年 146 卷 8 期

页码：

收录情况： SCI

摘要： This paper discusses the problem of low injection rates from Venturi injectors. The optimal combination of key structural parameters for Venturi injectors was investigated using a simulation software platform based on machine learning algorithms. The research considered different nozzle diameters under an inlet pressure of 0.3 MPa and outlet pressure of 0.1 MPa. For the various nozzle diameters, the optimal ranges of the contraction angle (20 degrees-30 degrees), diffusion angle (8 degrees-10 degrees), throat length (40-50 mm), and ratio of throat diameter to nozzle diameter (1.5-1.66) were found, and the parameter combinations that maximized the injection rate were determined. A regression model was used to predict the maximum injection rate with different nozzle diameters. For a nozzle diameter of 4 mm, the maximum injection rate increased by about 200% compared with the original model. In addition, a regression model for the prediction of the injection rate based on injector structural parameters was construction using data from physical injector models and verified by a three-dimensional printer. The model may be used to quickly and effectively design or predict the injection rate for different structural parameters of the Venturi injector.