摘要
基于CFD技术建立了Hardi LB-255型果园风送式喷雾机雾滴沉积分布模型。根据实测的喷雾机相关参数,确定了二维流场的边界条件及模型参数,得到了约束条件下的雾滴沉积轨迹及不同层面上的沉积比率。设计了与模拟条件相同的验证试验,对模拟结果进行了验证分析。研究表明,在距风扇中心小于240 cm的区域内,所建模型模拟结果能较准确描述雾滴沉积规律。
In order to investigate the droplet distribution of air-assisted orchard sprayer,a model for Hardi LB-255 air-assisted sprayer was developed based on CFD technology.The 2-D boundary and the model variables were defined to correspond to the tested sprayer.The trajectory of air-assisted droplets and the distribution of droplets in different layers were simulated.The relative errors of simulated results could show the droplet distribution accurately with the range less than 240 cm from the fan.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2010年第2期62-67,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家"863"高技术研究发展计划资助项目(2008AA100905)
"十一五"国家科技支撑计划资助项目(2007BAD89B04)
关键词
果园喷雾机
风送式
CFD
模拟
雾滴
分布
Orchard sprayer
Air-assisted
CFD
Simulation
Droplet
Distribution
作者简介
祁力钧，教授，博士生导师，主要从事现代农业装备和计算机测控研究，E-mail：qilijun@cau．edu．cn
