Jet-A表征燃料/乙醇掺混燃料层流燃烧特性研究

何旭; 江正晖; 桑正; 刘泽昌; 冯光远; 杨青; 蒋厚实

doi:10.123456/j.rhnk.0000-00

Jet-A表征燃料/乙醇掺混燃料层流燃烧特性研究

doi: 10.123456/j.rhnk.0000-00

何旭^{1, 2,},
江正晖¹,
桑正¹,
刘泽昌¹,
冯光远¹,
杨青^{1, 2},
蒋厚实^1,*, ,

1.
北京理工大学机械与车辆学院, 北京 100081
2.
北京电动车辆协同创新中心, 北京 100081

基金项目: 国家自然科学基金面上项目 (No:21961122007)

详细信息

作者简介:
何旭（1976—），男，博士，副教授， E-mail: 11111111@bit.edu.cn

通讯作者:
蒋厚实（1990-），男，博士，助理研究员， E-mail:12345678@hotmail.com

中图分类号: TK421.2
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- 文章访问数: 42
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- PDF下载量: 1
- 被引次数: 0
出版历程
- 收稿日期: 2022-10-24
- 网络出版日期: 2023-07-10

Laminar Combustion Characteristics of Jet-A surrogate Fuel /Ethanol

HE Xu^{1, 2
,},
JIANG Zhenghui¹,
SANG Zheng¹,
LIU Zechang¹,
FENG Guangyuan¹,
YANG Qin^{1, 2},
JIANG Houshi^{1,*
, ,}

1.
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
2.
Collaborative Innovation Center of Electric Vehicles in Beijing , Beijing 100081, China

摘要

摘要: 为了研究初始温度470K、初始压力0.1MPa下乙醇掺混对航空煤油层流火焰燃烧特性的影响，文中利用定容燃烧弹设备结合仿真进行对比分析。结果表明，乙醇的加入显著提升了航空煤油的层流火焰燃烧速度，但仿真结果与试验数据之间存在较大的偏差，在低当量比时尤为严重，需进一步优化机理。在此基础上通过敏感性分析，发现对层流火焰燃烧速度影响较大的4个基元反应，通过对4个基元反应的参数进行调整，修改得到新模型，该模型与试验值存在较好的吻合度。
- 航空煤油 /
- 乙醇 /
- 层流火焰燃烧速度 /
- 敏感性分析
Abstract: To study the effect of ethanol blending on the combustion characteristics of aviation kerosene laminar flame at an initial temperature of 470K and an initial pressure of 0.1MPa, a constant volume incendiary bomb was used in this paper to conduct a comparative analysis combined with simulation. The results show that the addition of ethanol significantly improves the laminar burning velocity of aviation kerosene, but there is a large deviation between the simulation results and the experimental data, especially at low equivalence ratios, and the mechanism needs to be further optimized. On this basis, a sensitivity analysis was carried out, finding a great influence of four elementary reactions on the laminar burning speed. Adjusting the parameters of the four elementary reactions, a new model was obtained, being in good agreement with the experimental values.

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图 1 层流燃烧测试系统示意图

Figure 1. Schematic diagram of laminar combustion test

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图 2 不同掺混比下火焰传播图像（P=0.1MPa，T=470K，Φ=1.0）

Figure 2. Flame propagation images under different blending ratios（P=0.1MPa，T=470K，

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图 3 不同掺混比时的火焰传播速度与火焰拉伸率的关系

Figure 3. The relationship between stretched flame propagation speed and stretch rate

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图 4 T=470K、P=0.1MPa时不同掺混比下的层流火焰燃烧速度随当量比的变化

Figure 4. Laminar burning velocities with equivalent ratio of various blending ratios when T=470K、P=0.1MPa

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图 5 初始机理的敏感性分析

Figure 5. Sensitivity analysis of the initial mechanism

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图 6 修正后的机理与试验数据的对比

Figure 6. Comparison of the revised mechanism with experimental data

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表 1 试验工况表

Table 1. Experimental initial condition

参数名称	数值
试验温度T/K	470
试验压力P_i/MPa	0.1
掺混比β	E0，E30，E60
当量比Φ	0.8，0.9，1.0，1.1，1.2，1.3，1.4

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表 2 修正前后主要基元反应系数的对比

Table 2. Comparison of Modified Primitive Response Coefficients

基元反应	原模型参数			修正后的模型参数			参考文献
基元反应	A	n	E_a	A	n	E_a	参考文献
CO+OH=CO₂+H	7.02E+04	2.1	-355.7	1.40E+05	1.9	-2347.7	^[27]
HCO+O₂=CO+HO₂	7.58E+12	0.0	410.0	3.00E+12	0.0	0.0	^[28]
C₃H₆+H=C₃H₅-A+H₂	3.64E+05	2.5	4361.2	5.00E+12	0.0	1505.7	^[29]
H+O₂(+M)=HO₂(+M)	4.65E+12	0.44	0.0	5.80E+12	0.4	0.0	^[30]

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