不同管口浸没方式下气泡生成行为特性

吴晅; 李晓瑞; 马骏; 秦梦竹; 周雅慧; 李海广

doi:10.11949/j.issn.0438-1157.20180804

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不同管口浸没方式下气泡生成行为特性

流体力学与传递现象 | 更新时间：2026-07-24

- 不同管口浸没方式下气泡生成行为特性
- Behavior characteristics of bubble formation under various nozzle immersion modes
- 化工学报 2019年70卷第3期页码：901-912
- 作者机构：
  
  内蒙古科技大学能源与环境学院，内蒙古包头 014010
- 作者简介：
  
  及第一作者：吴晅（1976—），男，博士，教授，wxgif@163.com
- 基金信息：
  
  国家自然科学基金项目(51666015)
- DOI：10.11949/j.issn.0438-1157.20180804
  中图分类号： TV 131.4
- 收稿：2018-07-16，
  
  修回：2018-12-20，
  
  网络首发：2026-07-24，
  
  纸质出版：2019-03-05
- 稿件说明：
移动端阅览
吴晅, 李晓瑞, 马骏, 秦梦竹, 周雅慧, 李海广. 不同管口浸没方式下气泡生成行为特性[J]. 化工学报, 2019, 70(3): 901-912

WU Xuan, LI Xiaorui, MA Jun, QIN Mengzhu, ZHOU Yahui, LI Haiguang. Behavior characteristics of bubble formation under various nozzle immersion modes[J]. CIESC Journal, 2019, 70(3): 901-912
吴晅, 李晓瑞, 马骏, 秦梦竹, 周雅慧, 李海广. 不同管口浸没方式下气泡生成行为特性[J]. 化工学报, 2019, 70(3): 901-912 DOI： 10.11949/j.issn.0438-1157.20180804.

WU Xuan, LI Xiaorui, MA Jun, QIN Mengzhu, ZHOU Yahui, LI Haiguang. Behavior characteristics of bubble formation under various nozzle immersion modes[J]. CIESC Journal, 2019, 70(3): 901-912 DOI： 10.11949/j.issn.0438-1157.20180804.

摘要

对三种管口浸没方式下气泡生成行为过程进行可视化实验和三维数值模拟。对比分析了管口浸没方式、管口直径、气体流量等因素对气泡生成形态、气泡脱离直径、气泡膨胀脱离时间以及气液流场速度的影响。实验与数值模拟取得较为一致的结果。研究发现，气泡生成过程可分为单气泡生成和双气泡生成聚并两种模式，两者之间存在明显的气泡脱离形态转折点；三种管口浸没方式下，气泡脱离直径均随着管径和气体流量的增大而增大；气泡膨胀脱离时间随管径的增大而增加，而随气体流量的增加先急剧下降然后趋于平缓；在底吹和侧吹方式下，气泡长短轴比

值分别在0.75和1.1附近波动，其最终脱离形式均接近于球形；而顶吹方式下，

值在1.5附近波动，气泡脱离形态为椭球形。

Abstract

The visual experiment and three-dimensional numerical simulation of the bubble generation behavior process under three nozzle immersion modes were carried out. The impacts of nozzle immersion modes

nozzle diameters and gas flow rates on the bubble formation

the bubble detachment diameter

the bubble expansion and detachment time

and the velocity of the gas-liquid flow are analyzed. Good agreement between the experimental and numerical simulation results is obtained. The results indicate that the bubble formation process can be categorized into two modes: single bubble generation and double bubbles generation

and there exists a critical point indicating bubble detachment form. The bubble detachment diameter increases with the i

ncrease of nozzle diameter and gas flow rate under all three different nozzle immersion modes. The bubble expansion and detachment time increases with the enlargement of nozzle diameter. However

with the increase of gas flow rate

it decreases sharply at the beginning and then tends to be gentle gradually. With bottom-submerged and side-submerged nozzles

the major to minor axis ratio (

) of bubble fluctuates near the values of 0.75 and 1.1

respectively. And the bubble detaches in spherical shape. While with top-submerged nozzle

the bubble detaches in the form of ellipsoidal shape with the

value fluctuates around 1.5.

关键词

Keywords

references

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