氢气添加对RP-3航空煤油着火特性的影响

发布时间：2017-12-30 23:50

本文关键词：氢气添加对RP-3航空煤油着火特性的影响　出处：《推进技术》2016年09期 　论文类型：期刊论文

【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。
[Abstract]:In order to reveal the effect of small combustible gas H _ 2 addition on the ignition characteristics of RP-3 aviation kerosene, the ignition characteristics of RP-3 aviation kerosene were measured by shock tube experimental device. The ignition delay time of RP-3 aviation kerosene under various operating conditions was obtained. The combustion reaction mechanism of RP-3 aviation kerosene was simulated by three components: decane toluene and propanyl cyclohexane. The Zeng-Jachimowski combustion reaction mechanism of RP-3/H2 mixed fuel was constructed. The mechanism is used to calculate and analyze the ignition delay time of RP-3/H2 mixed fuel under multiple operating conditions. The results show that the 1: Zeng-Jachimowski mechanism can well predict the ignition characteristics of RP-3/H2 mixture at high temperature. When the H _ 2 ratio is less than 70, the ignition delay time decreases slowly with the H _ 2 addition, and the activity of RP-3 aviation kerosene / hydrogen mixture increases significantly when the H _ 2 addition ratio is greater than 90. The ignition delay time decreases sharply with the addition of H2. The nonlinear effect of H _ 2 addition on the ignition delay time of RP-3 aviation kerosene was explained by ROP analysis of the concentration of active free radicals and the formation rate of H _ 2 radical.
【作者单位】：沈阳航空航天大学航空航天工程学院;
【基金】：国家自然科学基金(51376133) 辽宁省自然科学基金(2013024009) 辽宁省博士启动基金(20141076) 沈阳市科技攻关项目(F13024200)
【分类号】：V312
【正文快照】： 1引言超燃冲压发动机是实现高超声速飞行的首要关键技术,是目前世界各国竞相发展的热点领域[1]。随着各国超燃冲压发动机研制的不断深入,以超声速燃烧为特点的超燃冲压发动机呈现出燃料充分燃烧时间受限以及高速状态下火焰难于稳定等诸多技术问题。如何缩短碳氢燃料着火延迟时

【相似文献】