摘要
为了解果园喷雾机的风送气流分布情况,采用数值分析与试验相结合的方法研究了一种果园喷雾机气流场分布规律。结果显示:喷雾机风道两侧的气流基本呈对称分布,大部分测量点气流速度试验值与仿真值的相对误差在30%以内,数值分析结果较为准确的反映了风道出口的气流分布特征。在喷雾机外部空气域中,随着水平距离和高度的增加,气流速度值逐渐减小,外部空气域大多数测量点的气流速度试验值较仿真值大,其绝对误差在0~5.9m/s之间,最大相对误差达125%;当水平距离小于1m、高度小于0.6m时,气流速度相对误差约为8%~29%,气流速度的试验值与仿真值较为吻合。
In order to study the airflow distribution of orchard sprayer,numerical analysis and experimentvalidation method were used in this study.Thisstudy indicates that the airflow on both sides of the sprayer duct is basically symmetrical,most ofthe relative error between the experimental and simulation results of the airflow velocity at each measured point is within 30%.The numerical results accurately reflect the airflow distribution at the outlet of the duct.In the airflow field of the outside air domain,with the horizontal distance and height increase,the air velocity value gradually decreases.The air velocity experimentalresults of most measurement points in the outside air domain are larger than simulationresults,the absolute errors are 0-5.9m/s,the maximum relative error is up to 125%.When the horizontal distance is less than 1m and the height is less than 0.6m,the relative error is about 8%-29%,and the experimental and simulation results of air velocity is more consistent.
作者
欧鸣雄
吴敏敏
董祥
贾卫东
杨学军
臧帅
Ou Mingxiong;Wu Minmin;Dong Xiang;Jia Weidong;Yang Xuejun;Zang Shuai(Institute of Agricultural Engineering,Jiangsu University,Zhenjiang 212013,China;Chinese Academy of Agricultural Mechanization Sciences,Beijing 100083,China;Key Laboratory of Plant Protection Engineering,Ministry of Agriculture,Zhenjiang 212013,China)
出处
《农机化研究》
北大核心
2022年第10期151-156,共6页
Journal of Agricultural Mechanization Research
基金
国家重点研发计划项目(2018YFD0201400)
江苏大学农业装备学部项目(2020)。
关键词
果园喷雾机
气流分布
数值分析
orchard sprayer
airflow distribution
numerical analysis
