农机化研究2025，Vol.47Issue(1)：106-113,156,9.DOI:10.13427/j.issn.1003-188X.2025.01.017
基于CFD的玉米田间吊喷装置仿真设计与试验
Simulation Design and Experiment of Corn Field Spraying Device Based on CFD
摘要
Abstract
In order to solve the problems such as poor deposition effect of fog drops on the lower and middle layers of maize crops,low coverage rate of fog drops due to uneven distribution of fog drops in different canopy layers,poor pesti-cide spraying method and environmental pollution,a corn field spraying device was designed.The key parameters were determined by using mathematical theoretical geometric relations and Fluent software.the length of the boom was 1 950 mm,the height of the side under sprinkler head from the bottom of the boom was 50 mm,the height of the side above sprinkler head from the top of the plant was 50 mm,the angle between the side under sprinkler head and the horizontal direction was 38.8°,and the angle between the side above sprinkler head and the horizontal direction was 43.7°.Using Design-Expert software,a three-factor and three-level orthogonal test was designed with the pressure at the upper nozzle of the boom side,the pressure at the lower nozzle of the boom side and the traveling speed of the machine as the test factors,and the average fog drop coverage rate of the blade Y as the test index.According to variance analysis,the prima-ry and secondary order of factors affecting fog drop coverage is:moving speed>lateral lower pressure>lateral upper pres-sure.After field test,the final combination parameters are as follows:the machine speed is 0.8 m/s,the lateral upper pressure is 0.7 MPa,the lateral lower pressure is 0.5 MPa,and the fog drop coverage rate is 26.54%,The fog drop cov-erage rate of upper,middle and lower leaves was 28.32%,23.54%and 27.75%,respectively,and the relative error between model simulation and field test was 5.05%.The research results can provide reference forthe development of corn plant protection machinery.关键词
吊喷装置/病虫害/CFD/药害污染/雾滴覆盖率/玉米Key words
spraying device/plant diseases and insect pests/CFD/pesticide pollution/fog drop coverage/corn分类
农业科技引用本文复制引用
徐宁,胡敏英,桑永英,王锦轩..基于CFD的玉米田间吊喷装置仿真设计与试验[J].农机化研究,2025,47(1):106-113,156,9.基金项目
引进留学人员资助项目(C20210366,C20220359) （C20210366,C20220359）
