Micro bubble behavior and droplet oscillations in pendant droplet combustion

被引：0
|
作者：
Lu, Qi-Zhi [1 ,2 ]
Gong, Jing-Song [1 ]
Piao, Ying [1 ]
Yin, Ya-Jun [1 ]
Li, Hui [1 ]
Fan, Hong-Yu [1 ]
机构：
[1] School of Aerospace, Tsinghua University, Beijing
[2] Automobile Engineering Institute, Xinjiang Vocational and Technical College of Communications, Urumqi
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2015年 / 30卷 / 06期
关键词：
Combustion; Droplet oscillations; Mirco bubble behavior; Pendant droplet; Surface tension;
D O I：
10.13224/j.cnki.jasp.2015.06.008
中图分类号：
学科分类号：
摘要：
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: (1) The location of the micro bubbles generated inside droplet. (2) The volume expansion of the droplet caused by the micro bubble in incipient evaporation. (3) The droplet oscillates caused by the bubble behavior in combustion. (4) The 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 2.5-5.0 μL. ©, 2015, BUAA Press. All right reserved.
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页码：1344 / 1349
页数：5
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