农机化研究2024，Vol.46Issue(6)：9-18,10.
基于CFD的棉花吊喷施药喷头排布优化仿真与验证
Simulation and Verification of Arrangement Optimization on Cotton Suspender Sprayer Nozzles Based on CFD
摘要
Abstract
In order to solve the problem that the spraying effeciency is low due to canopy closure of cotton in the middle and later grow stages.The data of machanical harvest cotton whit 76 cm equal spacing was collected,and the model of cotton was establishied.Taking high clearance suspender sprayer as the carrier,the spraying effect of conical atomizer was simulated by CFD discrete phase model.To research the influence of nozzles arrangement,a response surface test was designed.Taking the ground clearance of lowest nozzle,distance between nozzles and α angle as experiment factors;and the coverage rate of droplets on the front and back of cotton blades was used as evaluation indexes.The optimized re-sults is the ground clearance of lowest nozzle is 400 mm,the distance between nozzles is 300 mm,and the α angle is 30°.At this time,the average predicted values of droplets coverage on the front and back of the blades are 20.283%and 11.042%.Using the actual cotton model to verify the simulation results,the average coverage of droplets on the front and back of cotton blades are 21.79%and 11.97%,and the maximum relative error is 8.02%and 9.40%,re-spectively.The experiment results show that the model is reliable.And the optimized arrangement of nozzles can improve the droplets deposition on the middle and lower blades,the whole cotton plant is well coveraged by droplets as well.关键词
棉花/施药机具/响应面试验/优化/CFDKey words
cotton/apply medicine machines tools/response surface test/optimization/CFD分类
农业科技引用本文复制引用
王锦轩,胡敏英,桑永英,徐宁,陈春皓,刘超..基于CFD的棉花吊喷施药喷头排布优化仿真与验证[J].农机化研究,2024,46(6):9-18,10.基金项目
河北省引进留学人员项目(C20210366) （C20210366）
