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挂滴燃烧过程中微气泡的成核

陆奇志 龚景松 朴英 殷雅俊 李辉 范红雨

陆奇志, 龚景松, 朴英, 殷雅俊, 李辉, 范红雨. 挂滴燃烧过程中微气泡的成核[J]. 航空动力学报, 2016, 31(3): 616-622. doi: 10.13224/j.cnki.jasp.2016.03.012
引用本文: 陆奇志, 龚景松, 朴英, 殷雅俊, 李辉, 范红雨. 挂滴燃烧过程中微气泡的成核[J]. 航空动力学报, 2016, 31(3): 616-622. doi: 10.13224/j.cnki.jasp.2016.03.012
LU Qi-zhi, GONG Jing-song, PIAO Ying, YIN Ya-jun, LI Hui, FAN Hong-yu. Micro bubble nucleation inside suspended droplet in combustion[J]. Journal of Aerospace Power, 2016, 31(3): 616-622. doi: 10.13224/j.cnki.jasp.2016.03.012
Citation: LU Qi-zhi, GONG Jing-song, PIAO Ying, YIN Ya-jun, LI Hui, FAN Hong-yu. Micro bubble nucleation inside suspended droplet in combustion[J]. Journal of Aerospace Power, 2016, 31(3): 616-622. doi: 10.13224/j.cnki.jasp.2016.03.012

挂滴燃烧过程中微气泡的成核

doi: 10.13224/j.cnki.jasp.2016.03.012
基金项目: 

国家自然科学基金(51036004,11272175)

高等学校博士生导师基金(20130002110044)

详细信息
    作者简介:

    陆奇志(1970-),男,安徽蒙城人,博士生,主要从事燃烧及燃烧设备的研究.E-mail:lqzlqzlqz@126.com

    通讯作者:

    朴英(1959-),女,吉林长春人,教授、博士生导师,博士,主要从事航空宇航推进技术与理论方面的研究. E-mail:piaoying@tsinghua.edu.cn

  • 中图分类号: V21;TQ038.3

Micro bubble nucleation inside suspended droplet in combustion

  • 摘要: 利用高速显微摄像技术观测了航空煤油RP-3的微尺度挂滴燃烧过程,分析了油滴内微气泡成核的基本机理和表现形式.在凸曲率诱发的低压成核机理下,确证了3种具体成核形式:①挂丝/油滴界面成核.挂丝温度高于油滴温度,在交界面上由于温差诱导了蒸发效应形成微气泡成核.②颗粒/油滴界面成核.微油滴内的微米量级的丝状或球状杂质颗粒及胶质颗粒形成的凸曲率侧诱导低压,成为气泡的萌生的成核点.③油滴表面凹坑成核.重组分形成筏结构与油滴表面侧的线张力和表面张力同时作用,引起油滴表面内凹,凹坑的凸曲率侧气泡成核点.这些进展为深入研究微尺度燃烧奠定了基础.

     

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出版历程
  • 收稿日期:  2015-09-14
  • 刊出日期:  2016-03-28

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