推进技术 ›› 2016, Vol. 37 ›› Issue (9): 1742-1751.

• 燃烧 传热 传质 • 上一篇    下一篇

氢气添加对RP-3航空煤油着火特性的影响

刘 宇,曾 文,马洪安,陈保东   

  1. 沈阳航空航天大学 航空航天工程学院,辽宁 沈阳 110136,沈阳航空航天大学 航空航天工程学院,辽宁 沈阳 110136,沈阳航空航天大学 航空航天工程学院,辽宁 沈阳 110136,沈阳航空航天大学 航空航天工程学院,辽宁 沈阳 110136
  • 发布日期:2021-08-15
  • 作者简介:刘 宇,男,讲师,博士,研究领域为航空发动机燃料燃烧实验与化学反应机理。 E-mail: liuyu_201409@163.com 通讯作者:曾 文,教授,博士后,研究领域为航空发动机燃烧过程与排放物生成的数值研究。
  • 基金资助:
    国家自然科学基金(51376133);辽宁省自然科学基金(2013024009);

Effects of Hydrogen Addition on Ignition

  1. School of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China,School of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China,School of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China and School of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China
  • Published:2021-08-15

摘要: 为了揭示可燃小分子气体H2添加对RP-3航空煤油着火特性的影响,采用激波管实验装置对RP-3航空煤油的着火特性进行了实验测量,获得了多工况下RP-3航空煤油的着火延迟时间。以RP-3航空煤油的正癸烷、甲苯和丙基环己烷三组分模拟替代燃料的燃烧反应机理为基础,构建了RP-3/H2混合燃料的Zeng-Jachimowski燃烧反应机理,并对该机理进行了验证。采用该机理对RP-3/H2混合燃料多工况下的着火延迟时间进行计算与分析,结果表明:Zeng-Jachimowski机理可以较好预测高温条件下RP-3/H2混合气着火特性;当H2添加比小于70%时,着火延迟时间随H2添加缓慢减小,当H2添加比大于90%时,RP-3航空煤油/氢气混合气活性显著提升,着火延迟时间随H2添加急剧减小;通过对H,OH和O活性自由基的浓度及H自由基生成速率ROP分析解释了H2添加对RP-3航空煤油着火延迟时间的非线性影响。

关键词: 氢气;RP-3航空煤油;反应机理;着火延迟时间;活性自由基

Abstract: In order to reveal the effects of H2 addition on the ignition characteristics of RP-3 kerosene,the ignition characteristics of RP-3 was measured in a chemical shock tube and the ignition delay time of the kerosene at various conditions were obtained. Based on the detailed reaction mechanism of RP-3 kerosene’s surrogate fuel which includes n-decane,toluene and propyl cyclohexane,a Zeng-Jachimowski reaction mechanism for the RP-3/H2 mixed fuel was developed and validated. This reaction mechanism was adopted to calculate and analyze the ignition delay time of RP-3/H2 mixture at various conditions,and the results show that the Zeng-Jachimowski mechanism can well predict the ignition delay time of RP-3/H2 mixture under high temperature condition. For H2 addition less than 70%,the ignition delay time decreases with H2 addition slowly,and for the H2 addition more than 90%,the ignition delay time decreases with H2 addition dramatically. Analysis of H, O,OH active radical concentration and H ROP has interpreted the non-linear influence of H2 addition on the ignition delay time of RP-3 kerosene.

Key words: Hydrogen;RP-3 kerosene;Reaction mechanism;Ignition delay time;Active radical