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二流体雾化器雾化过程仿真及试验

张雨生 何箐 由晓明 梁立康 张云杰

张雨生,何箐,由晓明,等.二流体雾化器雾化过程仿真及试验[J].农业工程,2023,13(8):107-112. doi: 10.19998/j.cnki.2095-1795.2023.08.018
引用本文: 张雨生,何箐,由晓明,等.二流体雾化器雾化过程仿真及试验[J].农业工程,2023,13(8):107-112. doi: 10.19998/j.cnki.2095-1795.2023.08.018
ZHANG Yusheng,HE Qing,YOU Xiaoming,et al.Simulation and experimental of atomization process in two fluid atomizer[J].Agricultural Engineering,2023,13(8):107-112. doi: 10.19998/j.cnki.2095-1795.2023.08.018
Citation: ZHANG Yusheng,HE Qing,YOU Xiaoming,et al.Simulation and experimental of atomization process in two fluid atomizer[J].Agricultural Engineering,2023,13(8):107-112. doi: 10.19998/j.cnki.2095-1795.2023.08.018

二流体雾化器雾化过程仿真及试验

doi: 10.19998/j.cnki.2095-1795.2023.08.018
详细信息
    作者简介:

    张雨生,硕士生,主要从事热防护涂层技术研究 E-mail:sdwdzhangyusheng@163.com

    何箐,通信作者,博士,博士生导师,主要从事热防护涂层技术研究 E-mail:heqing@caams.org.cn

  • 中图分类号: S220

Simulation and Experimental of Atomization Process in Two Fluid Atomizer

  • 摘要:

    探究了二流体雾化器液膜破碎过程与液滴形成过程,对不同螺距和喷嘴出口形状的二流体雾化器喷嘴进行仿真研究。仿真分析了二流体雾化器的液膜形成与破碎过程,通过耦合VOF-DPM模型,成功获得了雾化过程中的液滴粒径尺寸分布,并通过试验验证仿真结果的准确性。研究结果表明,二流体雾化器中螺距对气相的速度影响较大,高速的气相从出口流出时会形成较大湍流抬升导液管附近液相;不同的喷嘴结构会导致液相延伸的长度和一次破碎完成的时间不同,气相的速度越高二次破碎能产生的液滴颗粒粒径越小;气相速度较低的喷嘴二次破碎过程以液团形式完成二次破碎,气相速度较高的喷嘴则以液带形式完成二次破碎。

     

  • 图 1  二流体雾化器物理模型

    1. 进气管 2. 导液管 3. 壳体

    Figure 1.  Two fluid atomizer physical model

    图 2  1号二流体雾化器XY平面上液相随时间变化

    Figure 2.  Change of liquid phase with time in XY plane of No.1 two fluid atomizer

    图 3  2号二流体雾化器XY平面液相分布情况

    Figure 3.  Liquid phase distribution in XY plane of No. 2 two fluid atomizer

    图 4  1号二流体雾化器液相破碎随时间变化

    Figure 4.  Liquid phase breaking of No. 1 two fluid atomizervaries with time

    图 5  2号二流体雾化器液相破碎随时间变化

    Figure 5.  Liquid phase breaking of No.2 two fluid atomizervaries with time

    图 6  两种雾化器二次破碎后液滴粒径分布情况

    Figure 6.  Particle size distribution of droplets after secondary crushing of two atomizers

    图 7  1号二流体雾化器雾化液滴粒径分布

    Figure 7.  Particle size distribution of atomized droplets in No. 1 two fluid atomizer

    图 8  两组雾化器制得粉体的粒度分布

    Figure 8.  Particle size distribution of powder prepared by twogroups of atomizers

    图 9  两种二流体雾化器制备粉体表面和截面形貌

    Figure 9.  Surface and cross section morphologies of the powder prepared by two two-fluid atomizers

    表  1  二流体雾化器相关结构参数

    Table  1.   Related structural parameters of two fluid atomizers

    编号螺距/mm螺旋深度/mm喷嘴形状
    1124平面型
    2104锥形
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-02-02
  • 修回日期:  2023-04-03
  • 出版日期:  2023-08-20

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