射流混药装置结构参数对混药性能影响的模拟分析  

Simulation Analysis of Structure Parameters of Jet-mixing Apparatus on Jet-mixing Performance

作　　者：邱白晶[1] 徐溪超[1] 杨宁[1] 邓斌[1] 姜国微[1] 吴春笃[1] 

机构地区：[1]江苏大学现代农业装备与技术省部共建教育部重点实验室,镇江212013

出　　处：《农业机械学报》2011年第6期76-79,69,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2008AA100905;2006AA10A305-3);国家自然科学基金资助项目(30571240);高等学校博士学科点专项科研基金资助项目(20093227110008);江苏省属高校自然科学重大基础研究项目(10KJA470007)

摘　　要：以射流混药装置结构优化为目标,采用CFD方法研究了混药装置的嘴管距、面积比和吸入口角度等主要参数对混药性能的影响。用混药装置流动性能的实测值对射流混药装置数值模拟方案进行对比表明,确定的射流混药装置数值模拟方案合理。对嘴管距、面积比和吸入口角度3个参数进行了数值模拟。结果表明:这3个参数均不改变h-q单调递减关系类型;嘴管距和吸入口角度的变化不改变η-q关系类型,但面积比会改变η-q曲线变化趋势。Aimed at optimizing the structure of jet-mixing apparatus,effect of three main structure parameters： nozzle-tube distance,area ratio and entrainment angle on the mixing performance were investigated based on CFD technique.A mathematical model for jet apparatus was established and validated by actual experimental data.Simulated results and experiment results showed that the established model was reasonable.The results indicated that nozzle-tube distance,area ratio and entrainment angle would not change the tendency of h-q with the increasing of flow ratio.However,both nozzle-tube distance and entrainment angle would not change the tendency of η-q except for area ratio.

关 键 词：植保机械 混药装置 性能 参数优化 计算流体动力学 

分 类 号：S49[农业科学—植物保护]