Micro bubble behavior and droplet oscillations in pendant droplet combustion

LU Qi-zhi; GONG Jing-song; PIAO Ying; YIN Ya-jun; LI Hui; FAN Hong-yu

doi:10.13224/j.cnki.jasp.2015.06.008

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Micro bubble behavior and droplet oscillations in pendant droplet combustion

更新时间：2026-07-07

- Micro bubble behavior and droplet oscillations in pendant droplet combustion
- Vol. 30, Issue 6, Pages: 1344-1349(2015)
- 作者机构：
  
  1. 清华大学航天航空学院,北京,100084
  2. 新疆交通职业技术学院汽车工程学院,乌鲁木齐,831401
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2015.06.008
  CLC：
- Published：2015
- 稿件说明：
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陆奇志, 龚景松, 朴英, 殷雅俊, 李辉, 范红雨. 挂滴燃烧中的微汽泡行为和液滴跳动[J]. 航空动力学报, 2015, 30(6): 1344-1349.

doi: 10.13224/j.cnki.jasp.2015.06.008
陆奇志, 龚景松, 朴英, 殷雅俊, 李辉, 范红雨. 挂滴燃烧中的微汽泡行为和液滴跳动[J]. 航空动力学报, 2015, 30(6): 1344-1349. DOI： 10.13224/j.cnki.jasp.2015.06.008.

doi: 10.13224/j.cnki.jasp.2015.06.008 DOI：

摘要

利用高速显微摄像技术

观察研究了RP-3微尺度挂滴燃烧过程中

微汽泡的核化、生长、聚并和溢出的行为过程及液滴跳动现象.结果得出:①液滴中微汽泡产生的位置;②在蒸发初期时由微汽泡引起液滴体积的膨胀;③在燃烧中由汽泡行为导致液滴的跳动;④液滴燃烧的稳定(不爆裂)现象.分析了表面张力在挂滴燃烧过程中的作用

确定了挂滴稳定燃烧的临界条件下的临界特征体积在2.5~5.0μL.

Abstract

High-speed microscopic camera technology was applied to observe and research RP-3 micro-scale pendant droplet combustion process

the micro bubble nucleation

growth and coalescence and overflow behavior process and droplet oscillations phenomenon. The results show that:①The location of the micro bubbles generated inside droplet.②The volume expansion of the droplet caused by the micro bubble in incipient evaporation.③The droplet oscillates caused by the bubble behavior in combustion.④The droplets stability combust (not burst) phenomenon. The role of surface tension is analyzed in pendant droplets combustion. It is established that the critical condition of stability combust combustion for pendant droplet

the critical characteristic valume within 2.5-5.0μL.

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Related Institution

School of Aerospace Engineering，Beijing Institute of Technology

College of Mechanical and Electrical Engineering，Beijing University of Chemical Technology

南京航空航天大学能源与动力学院

南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室

西北工业大学航天学院燃烧、流动和热结构国家级重点实验室

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