草地蝗虫吸捕机吸头处流场研究  

Study of the Flow Field of the Suction Head of the Pneumatic Grassland Locust Trap Machine

作　　者：石岩[1] 杜文亮[1] 赵伟[1] 

机构地区：[1]内蒙古农业大学机电工程学院,呼和浩特010018

出　　处：《农机化研究》2008年第3期140-143,共4页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(50265002)

摘　　要：吸头处的流场直接影响着草地蝗虫吸捕机的吸捕率。为了研究吸头处流场的分布,利用FLUENT软件中的RNGk-ε湍流模型对流场进行数值模拟,并结合实验数据分析了草地蝗虫吸捕机吸头处流场的速度分布规律,揭示了吸口尾流和吹口射流在蝗虫吸捕过程中所起到的主要作用。计算结果与实验数据吻合较好,从而证明了该湍流模型和数值算法的可靠性。The flow field of the mouth directly affect the suction trap rate of the Pneumatic Grassland Locust Suction Trap Machine, To study the arrangement of the flow field, RNGk-ε turbulent model was applied for numerical simulation with the CFD software FLUENT. The role of the flow field constant speed was analyzed with numerical simulation result and experimental data, which indicated the main roles the wake of the suction mouth and the jet of the blow mouth play. The calculated result is well in agreement with experimental data, which shows the reliabilities of the turbulent model and the numerical simulation method.

关 键 词：植物保护 蝗虫吸捕机 试验 流场 数值模拟 实验研究 

分 类 号：S499[农业科学—植物保护]