Design and Test of CFD-Based Anti-Drift Device of Boom Sprayer for Soybean and Corn Strip Compound Planting
In order to solve the problem of pesticide damage to soybean and corn crops caused by serial drift of herbicide solution produced by boom sprayer in seedling weeding operation under soybean and corn strip compound planting mode,using fluid dynamics simulation technology(Fluent CFD)to determine the key structure and parameters of the anti-drift device,i.e.,the arc radius of the outer arc cover at the upper end of the anti-drift device is 300 mm,the length and height of the arc baffle at the lower end of the isolation device are 700 mm and 500 mm respectively,the overall size of the isolation device is 700 mm long,2 700 mm wide,and 800 mm high,and is able to operate simultaneously in a soybean unit+one row of corn strips on both sides,and its droplet drift rate was measured at 0.15%in the simulation calculation of ideal environment and model simplification.After the field test,it was concluded that the maximum droplet drift rate of 0.859%between soybean and corn strips under the operation speed of 5～8 km·h-1 was below the critical value of drug damage,which could meet the requirements of seedling chemical weed control operation of soybean and corn strip compound planting.The results of the study solved the problem of liquid drift,which is conducive to the promotion of the whole mechanization of the soybean and corn strip compound planting industry,and is of great significance to the development of the soybean and corn strip compound planting industry.
Soybean and corn strip compound plantingFluent CFDPlant protectionDroplet anti-drift
NETL
NSTL
万方数据
