火箭推进2025，Vol.51Issue(2)：62-75,14.DOI:10.3969/j.issn.1672-9374.2025.02.007
碳氢燃料燃烧三步简化反应机理
A simplified three-step reaction mechanism for the combustion of hydrocarbon fuel
姚霄 1王超 1杨建文 1胡海峰 1李炎栋 1杨锐2
作者信息
- 1. 西安航天动力研究所 航天液体动力全国重点实验室,陕西 西安 710100
- 2. 延安大学 数学与计算机科学学院,陕西 延安 716000
- 折叠
摘要
Abstract
With the continuous improvement of liquid rocket engine performance and the expansion of application scenarios and operating conditions,it is necessary to obtain the simulation results of the combustion flow field with relatively high accuracy in a short time to realize the rapid iterative research,which puts forward high requirements on the applicability of the reaction mechanism in wide operating conditions and the economy of the calculation.Therefore,a three-step simplified reaction mechanism of hydrocarbon fuel combustion is established which is suitable for a wide range of operating conditions([0.1,2.0]equivalent ratio,[1,1 000]atmosphere pressure,[300,1 000]K initial temperature and[0,4]nitrogen/oxygen ratio).In this wide range,the adiabatic equilibrium temperature,laminar flame velocity and ignition delay can be obtained correctly at the same time.The results of zero-dimensional/one-dimensional flame calculation of methane and decane show that the macroscopic combustion parameters calculated by the three-step mechanism are in good agreement with the detailed mechanism and skeleton mechanism when the equivalent ratio,pressure,initial temperature and nitrogen/oxygen ratio change greatly.The Sandia flame D is further calculated and compared with a detailed mechanism and experiment.The accuracy of the mechanism in calculating turbulent combustion is proved by the distribution of temperature,velocity and component.关键词
碳氢燃料/燃烧/简化反应机理Key words
hydrocarbon fuel/combustion/simplified reaction mechanism引用本文复制引用
姚霄,王超,杨建文,胡海峰,李炎栋,杨锐..碳氢燃料燃烧三步简化反应机理[J].火箭推进,2025,51(2):62-75,14.
