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旋流式气泡雾化喷嘴喷雾特性实验研究

赵芳 徐兵兵 符澄 王越 张海洋

赵芳,徐兵兵,符澄,等. 旋流式气泡雾化喷嘴喷雾特性实验研究[J]. 实验流体力学,2022,36(X):1-8 doi: 10.11729/syltlx20210026
引用本文: 赵芳,徐兵兵,符澄,等. 旋流式气泡雾化喷嘴喷雾特性实验研究[J]. 实验流体力学,2022,36(X):1-8 doi: 10.11729/syltlx20210026
ZHAO F,XU B B,FU C,et al. Experimental study on the characteristics of swirl effervescent atomizer[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-8. doi: 10.11729/syltlx20210026
Citation: ZHAO F,XU B B,FU C,et al. Experimental study on the characteristics of swirl effervescent atomizer[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-8. doi: 10.11729/syltlx20210026

旋流式气泡雾化喷嘴喷雾特性实验研究

doi: 10.11729/syltlx20210026
详细信息
    作者简介:

    赵芳:(1988—),男,湖南衡阳人,硕士,副研究员。研究方向:燃气发生器设计与实验,风洞及相关设备设计与实验。通信地址:四川省绵阳市涪城区二环路南段6号12信箱1分箱(621000)。E-mail:zfcardc@163.com

    通讯作者:

    E-mail:21482724@qq.com

  • 中图分类号: O321;TK313

Experimental study on the characteristics of swirl effervescent atomizer

  • 摘要: 与常规压力雾化、气动雾化相比,气泡雾化具有高效、经济和环保等优点。针对一种可变喷头旋流式气泡雾化喷嘴进行了实验研究,探讨了工作参数、喷嘴孔型、切割丝网目数(孔径)等因素对喷嘴流量、喷雾特性的影响规律。研究结果表明:不同孔型喷嘴的流量特性趋势基本一致;相同工作压力下,气液比不同会导致喷嘴流量的变化;安装切割丝网基本不影响喷嘴的流量特性趋势,但在相同工况下会造成喷嘴流量减小3%~7%,且丝网孔径越小,减小幅度越大;喷雾液滴粒径分布呈单峰形式,且随着工作压力或气液比的增大,喷雾液滴中位粒径会有不同程度的减小;相同喷雾能耗下,异形(方形、椭圆形)喷孔更有助于提高喷雾性能;丝网有利于提高喷嘴雾化性能,但需综合考虑喷嘴孔型、工作压力等因素选择丝网孔径;此外,安装切割丝网会在一定程度上降低喷雾主流轴向速度。
  • 图  1  实验系统简图

    Figure  1.  Schematic diagram of spray test system

    图  2  喷嘴结构图

    Figure  2.  Structure diagram of effervescent atomizer

    图  3  丝网结构

    Figure  3.  Structure diagram of wire mesh

    图  4  圆孔喷嘴的流量特性

    Figure  4.  Flow characteristics of circular hole atomizer

    图  5  方孔喷嘴的流量特性

    Figure  5.  Flow characteristics of square hole atomizer

    图  6  椭圆孔喷嘴的流量特性

    Figure  6.  Flow characteristics of elliptical hole atomizer

    图  7  不同孔型喷嘴流量系数曲线对比

    Figure  7.  Flow coefficient comparison of atomizer with different hole structures

    图  8  安装80目切割丝网后圆孔喷嘴的流量特性

    Figure  8.  Flow characteristics of atomizer with 80 mesh cutting screen

    图  9  不同目数切割丝网对圆孔喷嘴流量特性的影响

    Figure  9.  Flow characteristics comparison of atomizer with different hole structure cutting screen meshes

    图  10  不同孔型喷嘴喷雾锥角对比

    Figure  10.  Spray cone angle comparison of atomizer with different hole structures

    图  11  圆孔喷嘴喷雾液滴中位粒径随气液比的变化

    Figure  11.  D50 Curves of circular hole atomizer with gas-liquid ratio

    图  12  喷雾液滴粒径分布

    Figure  12.  Distribution of spray particles

    图  13  不同孔型喷嘴喷雾液滴粒径分布

    Figure  13.  Distribution of spray particles comparison of atomizer with different hole structures

    图  14  切割丝网目数对喷雾液滴中位粒径的影响

    Figure  14.  Influence curves of cutting screen on D50

    图  15  切割丝网对喷雾主流轴向速度的影响

    Figure  15.  D50 Influence curves of cutting screen on spray axial velocity

    表  1  实验参数表

    Table  1.   Experimental parameters

    参数数值(编号)
    工作压力/MPa,pa= pl0.2、0.3、0.4、0.5、0.6
    气液比0.10~0.35
    孔型Case 01、Case 02、Case 03
    切割丝网目数0、50、80、100(对应的丝网孔径分别为
    0、0.27、0.18及0.15 mm)
    下载: 导出CSV

    表  2  不同孔型喷嘴的喷雾液滴中位粒径

    Table  2.   D50 of atomizer with various hole structures

    喷嘴编号D50/μm
    Case 0122.94
    Case 0214.92
    Case 0319.97
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-04-01
  • 录用日期:  2021-07-05
  • 修回日期:  2021-06-18
  • 网络出版日期:  2022-02-17

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