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JP-10点火延时的激波管研究
王苏*,勾华杰,范秉诚,何宇中,张胜涛,崔季平
作者单位
王苏* 中国科学院力学研究所高温气体动力学重点实验室北京100080; 
勾华杰 重庆大学化学化工学院重庆400044 
范秉诚 中国科学院力学研究所高温气体动力学重点实验室北京100080; 
何宇中 中国科学院力学研究所高温气体动力学重点实验室北京100080; 
张胜涛 重庆大学化学化工学院重庆400044 
崔季平 中国科学院力学研究所高温气体动力学重点实验室北京100080; 
摘要:
在预加热激波管上测定了JP-10的点火延时时间.采用高精度真空仪直接测定注入激波管中JP-10蒸气压力,获得了JP-10气相浓度,解决了高碳数碳氢燃料点火延时激波管实验时管壁吸附影响燃料气相浓度确定的困难.采用压力传感器、单色仪和光电倍增管记录得到了完整的点火过程引起的压力变化和OH或CH自由基发射强度变化.自由基发射信号作为诊断点火发生的手段.当实验压力为151?556 kPa,温度为1000?2120 K,JP-10摩尔百分比为0.1%?0.55%,化学当量比为0.25、0.5、1.0、2.0时,获得了点火延时时间与实验温度、JP-10浓度、O2浓度的依赖关系,结果还表明,高温区和低温区呈现出不同的依赖关系.
关键词:  点火延时,JP-10,激波管
DOI:10.1360/cjcp2007.20(1).48.5
分类号:
基金项目:
Shock Tube Study of JP-10 Ignition Delay Time
Su Wang* ,Hua-jie Gou ,Bing-cheng Fan ,Yu-zhong He ,Sheng-tao Zhang ,Ji-ping Cui
Abstract:
JP-10 (exo-tetrahydrodicyclopentadiene, C10H16) ignition delay times were measured in a preheated shock tube. The vapor pressures of the JP-10 were measured directly by using a high-precision vacuum gauge, to remedy the difficulty in determining the gaseous concentrations of heavy hydrocarbon fuel arising from the adsorption on the wall in shock tube experiments. The whole variation of pressure and emission of the OH or CH radicals were observed in the ignition process by a pressure transducer and a photomultiplier with a monochromator. The emission of the OH or CH radicals was used to identify the time to ignition. Experiments were performed over the pressure range of 151-556 kPa, temperature range of 1000-2100 K, fuel concentrations of 0.1%-0.55% mole fraction, and stoichiometric ratios of 0.25, 0.5, 1.0 and 2.0. The experimental results show that for the lower and higher temperature ranges, there are different dependency relationships of the ignition time on the temperature and the concentrations of JP-10 and oxygen.
Key words:  Ignition delay time, JP-10, Shock tube