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激光与热丝点火对多组分液滴着火及燃烧的影响

崔彦玲 王宝瑞 远洪亮 孔文俊

崔彦玲, 王宝瑞, 远洪亮, 孔文俊. 激光与热丝点火对多组分液滴着火及燃烧的影响[J]. 空间科学学报, 2018, 38(6): 900-908. doi: 10.11728/cjss2018.06.900
引用本文: 崔彦玲, 王宝瑞, 远洪亮, 孔文俊. 激光与热丝点火对多组分液滴着火及燃烧的影响[J]. 空间科学学报, 2018, 38(6): 900-908. doi: 10.11728/cjss2018.06.900
CUI Yanling, WANG Baorui, YUAN Hongliang, KONG Wenjun. Effects of Laser and Hot Wire Modes on Ignition and Combustion of Single Multicomponent Droplet[J]. Journal of Space Science, 2018, 38(6): 900-908. doi: 10.11728/cjss2018.06.900
Citation: CUI Yanling, WANG Baorui, YUAN Hongliang, KONG Wenjun. Effects of Laser and Hot Wire Modes on Ignition and Combustion of Single Multicomponent Droplet[J]. Journal of Space Science, 2018, 38(6): 900-908. doi: 10.11728/cjss2018.06.900

激光与热丝点火对多组分液滴着火及燃烧的影响

doi: 10.11728/cjss2018.06.900
基金项目: 

国家自然科学基金项目(U1530157)和国家重点基础研究发展计划项目(2014CB239603)共同资助

详细信息
    作者简介:

    孔文俊,E-mail:wjkong@iet.cn

  • 中图分类号: TK16;V527

Effects of Laser and Hot Wire Modes on Ignition and Combustion of Single Multicomponent Droplet

  • 摘要: 采用挂滴方法,实验研究多组分单液滴的着火和燃烧特性,考察激光和热丝两种点火方式对液滴燃烧速率、火焰形貌及着火延迟时间的影响.实验结果表明,随着热丝点火时间增加,燃烧速率因液滴周围自然对流增强而加快.常重力下液滴火焰为包覆型火焰,火焰高度与液滴初始直径之比的最大值约为18.当t/tb>0.4时,尚处于热丝加热阶段的火焰高度比没有热丝加热的高约5D0,比激光关闭后的火焰高度高5~10D0.与热丝点火相比,激光点火响应迅速,对液滴附近气体干扰小,是地面上比较理想的点火方式.固定激光脉冲时间,随着激光强度的增加,单液滴的着火延迟时间缩短.

     

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出版历程
  • 收稿日期:  2018-04-20
  • 修回日期:  2018-06-20
  • 刊出日期:  2018-11-15

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