低压旋流喷嘴上游流场数值模拟分析  

Numerical Simulation Analysis on Upstream Flow Field of Low-Pressure Swirl Nozzle

作　　者：董星涛[1] 付方凯[1] 刘旭峰[1] 黄官强[1] 何龙[1] 卢德林[2] 

机构地区：[1]特种装备制造与先进加工技术教育部/浙江省重点实验室(浙江工业大学),浙江杭州310014 [2]浙江省机械工业情报研究所,浙江杭州310009

出　　处：《轻工机械》2013年第5期1-4,10,共5页Light Industry Machinery

摘　　要：采用优化后的旋芯参数,建立低压旋流喷嘴内流场的三维物理模型。通过改变喷嘴直径和长径比,利用Fluent软件模拟喷嘴内部流场,并与实验所得数据对比,从而揭示喷嘴直径与长径比对喷嘴雾化性能和雾化角的影响。模拟结果表明同一长径比下,轴向速度随着直径的增大而减小;雾化角随着长径比的增大而减小,随着喷口直径的增大而增大,这与试验得到的结果相符。The three-dimensional flow physical model of internal flow field of low-pressure swirl nozzle was established with optimized swirl core parameters. By means of adjusting diameter and length-diameter ratio of the nozzle, the upstream flow field of nozzle was simulated by using Fluent software and compared with the experimental data to investigate the effects of the diameter and length-diameter ratio to the atomization property and atomizing angle. The research results indicate that axial velocity decreases with the increase of the diameter in the same length-diameter ratio, and the atomizing angle increases with the decrease of the length-diameter ratio and increases with the increase of the diameter. These are consistent with the test results.

关 键 词：旋流喷嘴 数值模拟 长径比 轴向速度 雾化角 

分 类 号：TB126[理学—工程力学] TQ051[理学—力学]