甘油、水与压缩空气三流体喷雾雾化特性

发布时间：2018-01-04 18:44

本文关键词：甘油、水与压缩空气三流体喷雾雾化特性　出处：《中国科学院大学学报》2017年02期 　论文类型：期刊论文

【摘要】：气体与液体双流体喷雾的工业应用已较为成熟,三流体喷雾作为一种较新的喷雾方式,目前工业应用与相关研究均较少。针对一种三流体雾化喷嘴,搭建喷雾与测试实验台,利用高速摄像仪与相位多普勒粒子测试仪(PDPA)对三流体喷嘴甘油、水与压空雾化特性进行研究。探讨分析气液质量比(ALR)对液滴直径与速度的影响,以及直径与速度轴向与径向空间分布特性。研究发现当ALR范围为0.327~0.518时,液滴直径随ALR变化较小。液滴直径与速度空间分布极不均匀,喷嘴出口附近存在液滴直径随轴向距离增加而快速下降与液滴加速现象。此外,不同喷雾轴向距离下,中心部位的液滴比喷雾边缘更细小。
[Abstract]:The industrial application of gas and liquid two-fluid spray has been more mature, three-fluid spray as a relatively new spray mode, the current industrial applications and related research are less. For a three-fluid atomizing nozzle. A spray and test bench was set up, and the glycerin of three fluid nozzles was treated with high speed camera and phase Doppler particle tester (PDPA). The atomization characteristics of water and pressurized air were studied and the influence of ALR on droplet diameter and velocity was discussed. The axial and radial spatial distribution characteristics of diameter and velocity are also studied. It is found that when the ALR range is 0.327 ~ 0.518. The droplet diameter varies slightly with ALR. The spatial distribution of droplet diameter and velocity is very uneven. There is a phenomenon that droplet diameter decreases rapidly and droplet accelerates with the increase of axial distance near the nozzle outlet. The droplets in the center are smaller than the spray edges at different axial distances.
【作者单位】：西安交通大学动力工程多相流国家重点实验室;西安近代化学研究所;
【基金】：国家自然科学基金(51336006) 陕西省国际科技合作重点项目(2013KW30-05) 中央高校基本科研业务费专项基金资助
【分类号】：O359
【正文快照】： Bai F L,Jing Q,Zhou Z F,et al.Experimental study on three-fluid spray characteristics of glycerol/water/compressed air[J].Journal of University of Chinese Academy of Sciences,2017,34(2):129-134.气体辅助液体喷雾又称双流体喷雾,在化工生产、材料喷涂与内燃机

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