氨气掺混乙烯层流燃烧速度测量及动力学分析
Measurement and Kinetic Analysis on Laminar Burning Velocities of Ammonia/Ethylene/Air Flames
刘博文 1郭晓阳 1胡二江 1殷阁媛 1黄佐华1
作者信息
- 1. 西安交通大学动力工程多相流国家重点实验室,西安 710049
- 折叠
摘要
本文利用定容燃烧弹测量了不同掺混比(0-1)下NH3/C2H4/air火焰的层流燃烧速度.对NH3/air、C2H4/air层流燃烧速度进行验证,并利用Konnov Mech(2021)及GRI 3.0模型对NH3/C2H4/air火焰层流燃烧速度进行数值计算和动力学分析,其中Konnov机理表现出不错的性能.结果表明,C2H4的添加提高了层流燃烧速度,同时,NH3和C2H4掺混,拓展了反应路径,通过一系列组分NO、CH3等来交互加快反应.最后,通过分析活性自由基H、O、OH的浓度,探究了不同机理在预测层流燃烧速度产生差异的原因.
Abstract
The laminar burning velocities of NH3/C2H4/air flames at different doping ratios(0-1)were measured using a constant volume combustion chamber.The laminar burning velocities of NH3/air and C2H4/air were verified,and numerical calculations and kinetic analysis of the laminar burning velocities of NH3/C2H4/air flames were carried out using Konnov Mech(2021)and GRI 3.0 models,in which the Konnov mechanism showed good performance.As the results show,laminar burning velocities were increased due to the addition of C2H4.At the same time,NH3 and C2H4 were blended to broaden the reaction pathways and accelerate the reaction by a series of components NO,CH3,etc.interactively.Meanwhile,the concentrations of H,O and OH radicals were analyzed to investigate the reasons for the differences in the predicted laminar burning velocities among different mechanisms.
关键词
氨气/乙烯/层流燃烧速度/化学反应动力学Key words
ammonia/ethylene/laminar burning velocity/chemical reaction kinetics引用本文复制引用
基金项目
国家自然科学基金资助项目(52176131)
出版年
2024
NETL
NSTL
万方数据