氢氧燃烧加热器点火试验和数值仿真研究
Ignition experiment and numerical simulation on a combustion heater with hydrogen and oxygen
方昕昕 1伍军 1康忠涛 1王振锋 1翟小飞 1李宏斌 1黄可武 1王世茂 1刘龙 1代雄1
作者信息
- 1. 中国空气动力研究与发展中心空天技术研究所高超声速冲压发动机技术重点实验室,四川绵阳 621000
- 折叠
摘要
点火试验和数值仿真研究了氢氧燃烧加热器,对比了二组元和三组元两种不同构型的加热器性能.试验结果表明:二组元和三组元燃烧加热器均实现了"自点火",相较于三组元燃烧加热器,二组元燃烧加热器点火延迟时间减小约17.0％.试验中二组元和三组元燃烧加热器分别稳定燃烧190ms和189 ms,没有出现不稳定燃烧.试验和数值仿真得到的高温点火区分布类似,三组元加热器高温点火区更集中于氢气喷孔之后,二组元加热器高温点火区呈现V形.从试验喷嘴图像可见,相较于二组元燃烧加热器,三组元燃烧加热器在喷嘴出口处烧蚀的面积更大,烧蚀部位的温度更高,与数值仿真结果一致.
Abstract
Ignition experiments and numerical simulation were conducted to study a combustion heater with hydrogen and oxygen.Two different types of combustion heater,i.e:bipropellant combustion heater and tripropellant combustion heater,were studied.Both of them achieved self-ingition.Compared with the tripropellant combustion heater,the bipropellant combustion heater had shorter ignition delay time by 17.0％.The bipropellant combustion heater and tripropellant combustion heater worked stably and lasted for 190 ms and 189 ms,separately,in the experiments.The high temperature zones in the experiments and numerical simulations were similar.The high temperature zone in the tripropellant combustion heater located behind the hydrogen ignition hole,while the bipropellant combustion heater had a V-shape high temperature zone.From the experimental images of the injectors,the tripropellant combustion heater had a bigger ablation area,which was in consonance with the numerical results.
关键词
燃烧加热器/氢气/喷注结构/点火试验/火焰形状Key words
combustion heater/hydrogen/injection type/ignition experiment/flame shape引用本文复制引用
基金项目
国家自然科学基金(12202480)
国家自然科学基金(11902342)
高超声速冲压发动机技术重点实验室基金(WDZC6142703202208)
出版年
2024
NETL
NSTL
万方数据