农业工程学报
農業工程學報
농업공정학보
2010年
5期
148-152,彩插3
,共6页
徐幼林%汪希伟%郑加强%周凤芳
徐幼林%汪希偉%鄭加彊%週鳳芳
서유림%왕희위%정가강%주봉방
农业机械%农药%计算流体力学%流场%混药器%仿真
農業機械%農藥%計算流體力學%流場%混藥器%倣真
농업궤계%농약%계산류체역학%류장%혼약기%방진
agricultural machinery%agricultural chemicals%computational fluid dynamics (CFD)%flow fields%mixer%simulation
混药器是农药在线混合时能够使农药均匀到达目标的关键部件,对混药器内部流场进行具体分析以及动态显示,有助于混药器设计合理的混药器结构.该文在研究混药器混合机理的基础上,设计了4种不同结构形式的混药器,利用CFD软件,对其内部流场进行了数值模拟并对其进行了分析,发现吸药口在喉管后的混药器结构其吸药性能最好,通过试验,进一步证实了仿真结果的可靠性.
混藥器是農藥在線混閤時能夠使農藥均勻到達目標的關鍵部件,對混藥器內部流場進行具體分析以及動態顯示,有助于混藥器設計閤理的混藥器結構.該文在研究混藥器混閤機理的基礎上,設計瞭4種不同結構形式的混藥器,利用CFD軟件,對其內部流場進行瞭數值模擬併對其進行瞭分析,髮現吸藥口在喉管後的混藥器結構其吸藥性能最好,通過試驗,進一步證實瞭倣真結果的可靠性.
혼약기시농약재선혼합시능구사농약균균도체목표적관건부건,대혼약기내부류장진행구체분석이급동태현시,유조우혼약기설계합리적혼약기결구.해문재연구혼약기혼합궤리적기출상,설계료4충불동결구형식적혼약기,이용CFD연건,대기내부류장진행료수치모의병대기진행료분석,발현흡약구재후관후적혼약기결구기흡약성능최호,통과시험,진일보증실료방진결과적가고성.
Mixers play a critical role in direct injection systems, ensuring the uniformity of the distribution in target areas of pesticide deposition. In order to determine the optimal design of a mixer, computational fluid dynamics (CFD) simulations were run on 4 variations of geometry model. The internal flow fields of the mixers were studied and compared by the CFD software,and the result showed that the design of the pipette in the back of the throat was the best. The result of verification tests with these 4 types of mixers on an in-house-made direct injection test bed well coincides with that of the simulation.
