基于Fluent与高速摄影的玉米种子定向吸附研究  

Directional Adsorption Characteristics of Corn Seed Based on Fluent and High-speed Photography

作　　者：赵学观[1] 徐丽明[1] 王应彪[1] 李超[1] 

机构地区：[1]中国农业大学农业部土壤-机器-植物系统技术重点实验室,北京100083

出　　处：《农业机械学报》2014年第10期103-109,28,共8页Transactions of the Chinese Society for Agricultural Machinery

基　　金：高等学校博士学科点专项科研基金资助项目(20120008110045);中央高校基本科研业务费专项资金资助项目(2013YJ007)

摘　　要：玉米定向播种可使玉米长势一致,增加玉米种植密度,提高作物产量。采用真空吸口,将玉米种子按一定方向摆放在纸带上制作成播种处理带,是实现定向播种的方法之一。为了确保种子在吸附摆放过程中不发生方向偏转,设计了种子吸附摆放机构,建立了种子贴合吸附的受力模型。采用Fluent软件,对吸口流场进行仿真模拟,进行了吸口锥角、气孔间距和侧板宽度三因素仿真正交试验,并通过高速摄像进行了试验验证。确定了实现玉米种子定向吸附摆放的最佳吸口参数为：吸口锥角60°、气孔间距1.5 mm、侧板与气孔板外缘距离4 mm,气流速度6～8 m/s。Directed sowing corn can make the corn growthconsistent,increasing core planting density and yield of crops.Corn directional sowing tapes was one of the methods to realize the directional seeding.In order to ensure that seed direction deflection did not occur in the process of adsorption,we designed the seed adsorption arranging mechanism,and established the mechanical model of joint adsorption of seed.Software Fluent was used to make simulated analysis of the seed suction airflow field.Taking suction cone angle,hole spacing,and lateral plate width as three factors,an orthogonal experiment was carried out,and the directional absorption-arranging of corn seeds was determined.The best suction model parameters were as following,suction cone angle was 60°,hole spacing was 1.5 mm,lateral plate width was 4 mm,and air velocity was 6 ～ 8 m /s.

关 键 词：玉米种子 定向播种 真空吸口 吸附特性 Fluent仿真 

分 类 号：S223.2[农业科学—农业机械化工程]