气动雾化喷嘴辅助雾化孔角度优化  

Optimisation of Angle of Auxiliary Atomisation Hole of Pneumatic Atomisation Nozzle

作　　者：胡建林 郑水华[2] 汪军印 于燕坤 HU Jianlin;ZHENG Shuihua;WANG Junyin;YU Yankun(Jinhua Jinshun Tools Co.,Ltd.,Jinhua,Zhejiang 321035,China;College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]金华市金顺工具有限公司,浙江金华321035 [2]浙江工业大学机械工程学院,浙江杭州310014

出　　处：《轻工机械》2021年第6期75-80,共6页Light Industry Machinery

基　　金：国家自然科学基金资助项目(51476144)。

摘　　要：为了改善气动雾化喷嘴的雾化质量,课题组基于FLUENT软件,对气动喷嘴喷雾的形成过程进行数值模拟。建立了气动雾化喷嘴的空气与水的流动模型,通过气液耦合分析,探究辅助雾化孔角度的改变对雾化特性的影响,包括流场扩展程度变化规律、检测平面受到喷涂压力的变化规律以及液滴索特平均粒径(SMD)的变化3个方面的影响。仿真结果表明:对于本课题的模型而言,辅助雾化孔角度取40°时雾化效果较好;在满足雾化液滴粒径要求的前提下,气动雾化喷嘴应尽量选用较小的辅助雾化孔角度。In order to improve the atomization quality of the pneumatic atomization nozzle,the formation process of the pneumatic atomization nozzle spray was simulated based on FLUENT software.According to the basic structure of the atomization nozzle and actual engineering conditions,the geometric model was reasonably simplified and the pneumatic atomization nozzle was established.Through gas-liquid coupling analysis,the influence of the change of auxiliary atomization hole angle on the atomization characteristics was explored in three aspects,including the change rule of the flow field expansion,the change rule of the detection plane by the spray pressure and the change of droplet SMD.The simulation results show that for the model of this subject,the atomization effect is better when the auxiliary atomization hole angle is 40°.Under the premise of meeting the requirements of the atomized droplet size,the auxiliary atomization hole angle of pneumatic atomization nozzle should be as small as possible.

关 键 词：气动喷嘴 雾化 多相流 气液耦合分析 

分 类 号：O359.1[理学—流体力学] TH137[理学—力学]