Subsequent development of collided droplets in impinging streams

DU Min; HUANG Bin; LU Qicheng; GONG Jun; LUO Ming; WANG Zhuliang

doi:10.11949/j.issn.0438-1157.20171225

您当前的位置：

首页 >

文章列表页 >

Subsequent development of collided droplets in impinging streams

更新时间：2025-12-10

- Subsequent development of collided droplets in impinging streams
- CIESC Journal Issue 5, Pages: 2023-2031(2018)
- 作者机构：
  
  江苏大学能源与动力工程学院,江苏,镇江,212013
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171225
  CLC： K121
- Online First：05 May 2018，
  
  Published：05 May 2018
- 稿件说明：
移动端阅览
DU Min, HUANG Bin, LU Qicheng, et al. Subsequent development of collided droplets in impinging streams[J]. CIESC Journal, 2018, (5): 2023-2031.
DOI：

DU Min, HUANG Bin, LU Qicheng, et al. Subsequent development of collided droplets in impinging streams[J]. CIESC Journal, 2018, (5): 2023-2031. DOI： 10.11949/j.issn.0438-1157.20171225.

摘要

为了探索撞击流内液滴碰撞后续发展行为，设计搭建了由激光点光源和高速数码摄像机构成的高速数码摄像系统及气液两相撞击流实验平台。利用高速数码摄像系统记录下同轴对置气液两相撞击流中液滴碰撞导致的融合聚结或二次雾化过程，通过处理记录下的液滴运动过程图像，分析了进口液滴粒径、速度、黏度以及液滴碰撞角度等对撞击流中液滴碰撞结果的影响规律。结果表明：随着进口液滴粒径和速度的无限增大，液滴碰撞后最终发生炸裂；进口液滴黏度越小、表面张力越大、Ohnesorge数越小，液滴碰撞后越容易破碎；在本实验条件下，液滴同轴同向运动发生碰撞时，液滴碰撞后全部聚结，当液滴以一定角度发生斜碰时，碰撞后发生拉伸断裂，而当液滴同轴相向运动发生碰撞时，液滴碰撞后可能发生反射分离也可能炸裂。

Abstract

In order to study subsequent development of collided droplets in impinging streams

a high-speed digital camera system

consisting of laser point source and high-speed digital camera

and a gas-liquid two-phase experimental platform was designed. The high-speed digital camera system was used to record droplet coalescence or secondary atomization caused by collisions in coaxially opposite gas-liquid two-phase impinging streams. Images of droplet movement were processed to analyze influence of droplet size

velocity

viscosity

and impact angle on collision outcomes. The results showed that droplets would be busted upon collision with unlimited increase in size and velocity. As surface tension was increased but viscosity and Ohnesorge number were decreased

inlet droplets were more inclined to break. Under experimental conditions

droplets upon collision were coalesced when moved coaxially in the same direction

were stretchily separated when moved in a certain angle

and were reflexively separated or busted moved coaxially in the opposite direction.

关键词

Keywords

references

Views

184

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Investigation on droplet oscillatory behavior after free binary collision and coalescence

Heat transfer of oil-gas slug flow in horizontal pipe

Pressure fluctuation in gas-solid agitated fluidized bed

Performance study of gas-liquid vortex separators under low cross-sectional gas velocity

Identification of gas-liquid two-phase flow patterns in a riser based on recursive characteristics and CNN

Related Author

Rui LI

Yiren ZHANG

Hang CHEN

Guimin LU

Jianguo YU

WANG Xin

WANG Zhaoting

ZHANG Xiaoling

Related Institution

Engineering Research Center of Resource Process Engineering, Ministry of Education, East China University of Science and Technology

National Engineering Research Center for Integrated Utilization of Salt Lake Resource

Shanghai Institute of Pollution Control and Ecological Security

College of Pipeline and Civil Engineering, Shandong Provincial Key laboratory of Oil & Gas Storage and Transportation Safety, China University of Petroleum

State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University

⁰