Tunnel-convective air-assisted spraying technology for improving droplet deposition on hedgerow vines

作     者：Zhenjie Wen Wei Qiu Zhentao Zhang Weimin Ding Xiaolan Lyu Fiaz Ahmad Hui Wang 

作者机构：College of EngineeringNanjing Agricultural UniversityNanjing 210031China Jiangsu Academy of Agricultural SciencesNanjing 210014China Department of Agricultural EngineeringBahauddin Zakariya UniversirtyMultan 60800Pakistan 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报(英文))

年 卷 期：2021年第14卷第9期

页      面：9-18页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China(Grant No.51805271) Jiangsu Agricultural Science and Technology Innovation Fund(CX203172,CX181007) ‘Qinglan Project’of Jiangsu Province(QLGC) the Fundamental Research Funds for the Central Universities(KYXK2021001) 

主　　题：plant protection air-assisted hedgerow vines cross-flow fan droplet deposition 

摘      要：Given the impermeability,larger dosage,and higher drift of pesticides used in modern hedgerow vine canopies,a novel tunnel-convective air-assisted spraying technology was *** spraying equipment with high penetration and low drift was *** air-assisted system of this equipment was centrosymmetric,and the fan type was *** fan outlet width was 138 mm and the air duct’s main body followed a logarithmic spiral profile,based on parallel flow *** external diameter of the impeller was 157 mm,which was fixed into a barrel structure by 23 strong forward-curved blades,each being 1 mm *** central angle of the blades was 108°,and the ratio of the internal and external diameters was *** impeller and air duct served as guides to circulate and reciprocate airflow around the crown,forming a tunnel-convective air-assisted to the *** MATLAB interpolation,the airflow trajectory of the air convection circulation in the door-shaped cover was *** velocity field distribution test showed that,in the case of a canopy,there were tunnel-convective circulating airflows with high velocity on both sides and uniform velocity in the middle of the *** to the tunnel-convective air-assisted spraying technology,the vertical distribution uniformity of spray deposition has been significantly improved,spray penetration has been enhanced,penetrability has been effectively improved,and droplets on the ground and in the air have been significantly *** results of this study can assist in providing further optimization and improvement of plant protection *** new tunnel-convective air-assisted spraying technology may be a more favorable choice for future spray applications and the environment.