气吸式排种器吸孔气流场的有限元分析  

Finite Element Analysis for the Sucking Nozzle Air Field of Air-suction Seeder

作　　者：陈进[1] 李耀明[2] 王希强[2] 赵湛[2] 

机构地区：[1]江苏大学机械工程学院 [2]江苏大学江苏省现代农业装备与技术重点实验室

出　　处：《农业机械学报》2007年第9期59-62,共4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(项目编号:20060299004)

摘　　要：运用ANSYS有限元分析软件对影响气吸式排种器吸种效果的吸孔气流场进行了仿真和试验研究。仿真分析了吸孔形状、孔径及吸种导程对吸种效果的影响,并在排种器试验台上对仿真结果进行了验证。结果表明:吸孔直径越大,吸种效果越好;锥形孔的吸种效果优于直孔和沉孔;吸孔导程对吸种效果影响不大,只起到了调整和稳定气流的作用。ANSYS finite element analysis software was used in the paper to simulate and experimentally study on the sucking nozzle air field, which affected sucking effect of air-suction seeder. The straight nozzle, countersunk nozzle and conical nozzle with different diameters and air travelling distances were simulated and analyzed. The simulation results were verified on the experiment test-bed. The simulation and experimental results showed that the bigger of the sucking nozzle diameter, the better of the sucking effect, the conical nozzle is better than straight nozzle and countersunk nozzle, and the distance the air travels has nearly no influence on sucking effect, which just adjust and stabilize the air flow.

关 键 词：气吸式排种器 吸孔 气流场 有限元分析 仿真 

分 类 号：S223.2[农业科学—农业机械化工程]