农业机械学报
農業機械學報
농업궤계학보
TRANSACTIONS OF THE CHINESE SOCIETY OF AGRICULTURAL MACHINERY
2010年
2期
62-67
,共6页
祁力钧%赵亚青%王俊%冀荣华%莽璐
祁力鈞%趙亞青%王俊%冀榮華%莽璐
기력균%조아청%왕준%기영화%망로
果园喷雾机%风送式%CFD%模拟%雾滴%分布
果園噴霧機%風送式%CFD%模擬%霧滴%分佈
과완분무궤%풍송식%CFD%모의%무적%분포
Orchard sprayer%Air-assisted%CFD%Simulation%Droplet%Distribution
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.
基于CFD技術建立瞭Hardi LB-255型果園風送式噴霧機霧滴沉積分佈模型.根據實測的噴霧機相關參數,確定瞭二維流場的邊界條件及模型參數,得到瞭約束條件下的霧滴沉積軌跡及不同層麵上的沉積比率.設計瞭與模擬條件相同的驗證試驗,對模擬結果進行瞭驗證分析.研究錶明,在距風扇中心小于240 cm的區域內,所建模型模擬結果能較準確描述霧滴沉積規律.
기우CFD기술건립료Hardi LB-255형과완풍송식분무궤무적침적분포모형.근거실측적분무궤상관삼수,학정료이유류장적변계조건급모형삼수,득도료약속조건하적무적침적궤적급불동층면상적침적비솔.설계료여모의조건상동적험증시험,대모의결과진행료험증분석.연구표명,재거풍선중심소우240 cm적구역내,소건모형모의결과능교준학묘술무적침적규률.
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.
