摘要
为了掌握旋流雾化喷嘴的雾化特性,基于CFD软件建立了该喷嘴的几何模型进行数值模拟,在验证了网格无关性和数值模拟结果可靠性之后,通过VOF和Realizablek-ε模型对不同压差工作条件下和不同结构的喷嘴分别进行数值模拟。结果表明:旋流雾化喷嘴的雾化流量、雾化锥角和流量系数会随着进、出口压差的增大而增大;喷嘴的旋流强度会随着喷嘴进、出口压差的增大而减小;当喷嘴的出口直径和出口长度增大时,喷嘴的各项雾化参数与理论值更接近,相应的雾化效果变好。
In order to master the atomization characteristics of the swirl atomizing nozzle,the geometric model of the nozzle is numerically simulated based on the CFD software.After verifying the independence of the grid and the reliability of the numerical simulation results,the nozzles with different pressure differences and different structures were simulated by VOF and Realizable k-ε model. The results show that the atomizing flow rate,atomizing cone angle and flow coefficient of the swirl atomizing nozzle will increase with the increase of inlet and outlet pressure difference.The swirl intensity of the nozzle will decrease with the increase of nozzle inlet and outlet pressure difference.When the outlet diameter and outlet length of the nozzle increase,the atomization parameters of the nozzle are closer to the theoretical values,and the corresponding atomization effect becomes better.
作者
马佳敏
王博韬
李胡坤
范熊杰
刘存喜
刘美丽
MA Jia-min;WANG Bo-tao;LI Hu-kun;FAN Xiong-jie;LIU Cun-xi;LIU Mei-li(School of Mechanical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;College of Resources and Environmental Sciences,China Agricultural University,Beijing 100083,China)
出处
《航空发动机》
北大核心
2019年第5期53-57,共5页
Aeroengine
基金
北京高等学校高水平人才交叉培养“实培计划”项目(18032021002-0956/006)
大学生创新创业计划项目(2018J00154)资助
关键词
旋流雾化喷嘴
数值模拟
雾化锥角
进出口压差
流量系数
航空发动机
swirl atomizing nozzle
numerical simulation
atomizing cone angle
inlet and outlet pressure difference
flow coefficient
aeroengine
