液流冲击圆盘铺展及破碎特性的研究

doi:10.12068/j.issn.1005-3026.2023.03.009

东北大学学报（自然科学版） ›› 2023, Vol. 44 ›› Issue (3): 370-375.DOI: 10.12068/j.issn.1005-3026.2023.03.009

液流冲击圆盘铺展及破碎特性的研究

刘中元，于庆波，刘军祥

(东北大学冶金学院，辽宁沈阳110819)

修回日期:2022-01-14 接受日期:2022-01-14 发布日期:2023-03-24
通讯作者: 刘中元
作者简介:刘中元(1997-)，男，湖北十堰人，东北大学博士研究生；于庆波(1966-)，男，山东莱阳人，东北大学教授，博士生导师.
基金资助:
国家重点研发计划项目(2017YFB0603603)；辽宁省“兴辽英才计划”项目(XLYC1802003).

Research on Spreading and Breaking Characteristics of Liquid Flow Impact Flat Disc

LIU Zhong-yuan， YU Qing-bo， LIU Jun-xiang

School of Metallurgy， Northeastern University， Shenyang 110819， China.

Revised:2022-01-14 Accepted:2022-01-14 Published:2023-03-24
Contact: YU Qing-bo
About author:-
Supported by:
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摘要/Abstract

摘要： 针对难以确定制取铁合金一定粒径下的工艺参数，基于飞溅板雾化原理，引入圆盘边缘处液膜厚度和流速为中间变量，将全过程分为圆盘内铺展和圆盘外破碎两个连续阶段，在圆盘内液膜铺展阶段建立气-液两相流数学模型，在圆盘外液膜破碎阶段建立液膜表面扰动波数学模型，研究了液流流速、液流直径和圆盘直径对液膜铺展及破碎特性的影响规律.结果表明，当介质为Sn-58Bi，液流流速为3m/s，圆盘直径为200mm，改变液流直径为50~100mm时，形成液滴直径为7.5~10mm；液流直径增加或圆盘直径减小时，破碎形成的液滴直径增大；液流流速增加时，液膜破碎时刻提前，对液滴直径的影响较小.

关键词: 飞溅板雾化；粒化；液膜破碎；多相流；铁合金

Abstract: Because of the difficulty in determining the process parameters under a specific particle size， based on the principle of splash plate atomization， the liquid film thickness and flow velocity at the edge of the disk are used as intermediate variables， and the entire process is divided into two correlations: spreading inside the disk and breaking outside the disk. The gas-liquid two-phase flow mathematical model was established for the liquid film spreading process inside the disc， and the liquid film surface disturbance wave mathematical model was established for the liquid film breaking process outside the disc. The effects of flow velocity， flow diameter， and disc diameter on the spreading and breaking characteristics of the liquid film were studied. The results show that when the medium is Sn-58Bi， the liquid flow rate is 3m/s， the diameter of the disc is 200mm， and the liquid flow diameter is changed to 50~100mm， the diameter of the formed droplet is 7.5~10mm; when the liquid flow diameter increases or the disc diameter decreases， the droplet diameter increases; when the liquid flow velocity increases， the breaking time decreases， and the effect on the droplet diameter is small.

Key words: splash plate atomization; granulation; liquid film breakup; multiphase flow; ferroalloy

中图分类号:

TF09

刘中元，于庆波，刘军祥. 液流冲击圆盘铺展及破碎特性的研究[J]. 东北大学学报（自然科学版）, 2023, 44(3): 370-375.

LIU Zhong-yuan， YU Qing-bo， LIU Jun-xiang. Research on Spreading and Breaking Characteristics of Liquid Flow Impact Flat Disc[J]. Journal of Northeastern University(Natural Science), 2023, 44(3): 370-375.

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液流冲击圆盘铺展及破碎特性的研究

Research on Spreading and Breaking Characteristics of Liquid Flow Impact Flat Disc

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