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[1]段志强,郑 东,周 斌.N2O-C2烃类燃料推进剂燃烧化学反应机理与动力学分析[J].火箭推进,2021,47(03):43-51.
　DUAN Zhiqiang,ZHENG Dong,ZHOU Bin.Chemical reaction mechanism and kinetic analysis of N2O-C2 hydrocarbons propellant[J].Journal of Rocket Propulsion,2021,47(03):43-51.
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N2O-C2烃类燃料推进剂燃烧化学反应机理与动力学分析

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 47 期数: 2021年03期 页码: 43-51 栏目: 研究与设计 出版日期: 2021-06-30
Title:
Chemical reaction mechanism and kinetic analysis of N2O-C2 hydrocarbons propellant
文章编号:
1672-9374(2021)03-0043-09
作者:
段志强; 郑 东; 周 斌
西南交通大学 机械学院,四川 成都 610031
Author(s):
DUAN Zhiqiang; ZHENG Dong; ZHOU Bin
School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China
关键词:
氧化亚氮;  小碳氢燃料;  化学反应机理;  灵敏度分析;  绿色推进剂
Keywords:
nitrous oxide;  small hydrocarbons;  chemical reaction mechanism;  sensitivity analysis;  green propellant
分类号:
V312
文献标志码:
A
摘要:
以验证充分、应用广泛的小碳氢燃料反应机理为基础,通过耦合N2O子机理,对比多种N2O—C2烃类燃料燃烧化学反应动力学模型。进一步的验证结果表明,USC-Konnov模型能更为准确地用来测算N2O—C2体系着火延迟时间,以及N2O—C2H2烃类燃料体系层流火焰的传播速度。对比不同模型预测结果发现:对N2O—C2烃类燃料的着火延迟时间而言,C2机理影响较小,而N2O子机理影响显著。对其层流火焰传播速度而言,C2机理仅在富燃时有一定影响,而N2O子机理在整个化学计量比范围内均有较大影响。进而通过灵敏度分析从化学反应动力学的角度给出了合理解释,确定了对N2O—C2烃类燃料着火延迟时间、火焰传播速度影响较大的基元反应。其中,基元反应N2O+M=N2+O+M和N2O+H=N2+OH对N2O—C2烃类燃料体系的着火、燃烧过程起着决定性作用。
Abstract:
Based on the fully validated and widely used chemical reaction mechanism of small hydrocarbons,the chemical kinetic models of various N2O—C2 hydrocarbons are compared by coupling with N2O sub-mechanisms.Further validation results show that the USC-Konnov model can be used to calculate the ignition delay time of N2O—C2 hydrocarbons and laminar flame velocity of N2O—C2H2 more accurately.For N2O—C2 hydrocarbons ignition delay time,the comparison of different model predictions indicates that C2 mechanism has little effect while N2O sub-mechanism has significant effect.As for the propagation velocity of laminar flame,C2 mechanism has a certain effect only under the fuel-rich condition,while N2O sub-mechanism has important effect under the whole equivalent ratio range.Moreover,a reasonable explanation is presented through the sensitivity analysis from the point of view of chemical kinetics,and the elementary reactions that have a greater impact on the ignition delay time and laminar flame velocity of N2O—C2 hydrocarbons are determined.Among them,the elementary reactions of N2O+M=N2+O+M and N2O+H=N2+OH dominate the processes of N2O—C2 hydrocarbons ignition and combustion.

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备注/Memo

收稿日期：2020-12-07; 修回日期:2020-12-30
基金项目：国家自然科学基金(51606212)
作者简介：段志强(1995—),男,硕士,研究领域为燃料燃烧强化。
通信作者：郑东(1987—),男,博士,硕士生导师,研究领域为燃料燃烧强化。

更新日期/Last Update: 1900-01-01