异辛烷预混层流火焰传播特性的实验与数值研究

推进技术 ›› 2015, Vol. 36 ›› Issue (11): 1694-1698.

异辛烷预混层流火焰传播特性的实验与数值研究

杨波,洪延姬,徐庆尧,刘毅,陈其盛,丁小雨

装备学院激光推进及其应用国家重点实验室，北京 101416,装备学院激光推进及其应用国家重点实验室，北京 101416,装备学院激光推进及其应用国家重点实验室，北京 101416,装备学院激光推进及其应用国家重点实验室，北京 101416,装备学院激光推进及其应用国家重点实验室，北京 101416,装备学院激光推进及其应用国家重点实验室，北京 101416

发布日期:2021-08-15
作者简介:杨波(1992—)，男，硕士生，研究领域为碳氢燃料预混层流燃烧。
基金资助:
国家自然科学基金(11372356)。

Experimental and Numerical Study on Premixed Laminar Flame Propagation Characteristics for Iso-Octane

State Key Laboratory of Laser Propulsion and Application，Equipment Academy，Beijing 101416，China,State Key Laboratory of Laser Propulsion and Application，Equipment Academy，Beijing 101416，China,State Key Laboratory of Laser Propulsion and Application，Equipment Academy，Beijing 101416，China,State Key Laboratory of Laser Propulsion and Application，Equipment Academy，Beijing 101416，China,State Key Laboratory of Laser Propulsion and Application，Equipment Academy，Beijing 101416，China and State Key Laboratory of Laser Propulsion and Application，Equipment Academy，Beijing 101416，China

Published:2021-08-15

摘要/Abstract

摘要： 利用定容弹和高速纹影摄像技术研究了初始压强50～101kPa，当量比0.8～1.3的异辛烷预混层流火焰传播特性，分析了初始压强、当量比对层流燃烧速度和马克斯坦长度的影响。实验结果表明:异辛烷层流燃烧速度随初始压强的增加而减小；在不同初始压强条件下，最大层流燃烧速度都在当量比为1.1时获得；马克斯坦长度随当量比和初始压强的增加而减小；不同初始压强条件下，当量比为1.3时，马克斯坦长度接近于0，拉伸对火焰稳定性的影响最小；简化反应机理能很好地预测富燃条件下层流燃烧速度，贫燃时略大于实验结果。

关键词: 异辛烷；层流火焰；预混燃烧；定容弹；传播特性

Abstract: Propagation characteristics of premixed laminar flame for iso-octane were studied via the constant bomb and high-speed schlieren photography over the initial pressure range of 50～101 kPa and equivalence ratio from 0.8 to 1.3. The effects of initial pressure and equivalence ratio on laminar burning velocity and Markstein length were analyzed. Experimental results show that the laminar burning velocity for iso-octane decreases with the increasing of initial pressure. Under the different initial pressure condition，the maximum laminar burning velocity for iso-octane obtains at equivalence ratio 1.1. Markstein length decreases with the rising of initial pressure and equivalence ratio. When the equivalent ratio is 1.3 at different initial pressure，Markstein length is close to zero and the influence of stretch on flame stability is the minimum. The simplified reaction mechanism can predict rich fuel laminar burning velocity well. Under lean fuel condition，the results from simplified reaction mechanism are slightly larger than the experimental results.

Key words: Iso-octane；Laminar flame；Premixed combustion；Constant combustion bomb；Propagation characteristics

杨波,洪延姬,徐庆尧,刘毅,陈其盛,丁小雨. 异辛烷预混层流火焰传播特性的实验与数值研究[J]. 推进技术, 2015, 36(11): 1694-1698.

YANG Bo,HONG Yan-ji,XU Qing-yao,LIU Yi,CHEN Qi-sheng,DING Xiao-yu. Experimental and Numerical Study on Premixed Laminar Flame Propagation Characteristics for Iso-Octane[J]. Journal of Propulsion Technology, 2015, 36(11): 1694-1698.

参考文献

[1] 宋冈霖, 冮强, 王辽, 等. 碳氢燃料超然冲压发动机支板凹腔一体化稳焰性能研究[J]. 推进技术, 2013, 34(11): 1499-1506. (SONG Gang-lin, GANG Qiang, WANG Liao, et al. Studies of Strut-Cavity Flameholder Performance in Scramjet Combustor with Hydrocarbon Fuel[J]. Journal of Propulsion Technology, 2013, 34(11): 1449-1506.)
[2] Tiskoff J M, Drummond J P, Edwards T, et al. Future Direction of Supersonic Combustion Research[R]. AIAA 97-1017.
[3] 刘建文, 熊生伟, 马雪松, 等. 正葵烷燃烧详细反应机理的构建及简化[J]. 推进技术, 2012, 33(1): 64-68. (LIU Jian-wen, XIONG Sheng-wei, MA Xue-song, et al. Development and Reduction of n-Decane Detailed Combustion Reaction Mechanism[J]. Journal of Propulsion Technology, 2012, 33(1): 64-68.)
[4] 李勇, 沈怀荣. 非平衡等离子体对甲烷点火和火焰传播影响的机理分析[J]. 推进技术, 2013, 34(11): 1130-1136. (LI Yong, SHEN Huai-rong. Mechanism Analysis of Non-Equilibrium Plasma of Non-Equilibrim Plasma of Non-Equilibrium Plasma Effects on Ignition and Flame Propagation of Methane/Air Mixture[J]. Jou-rnal of Propulsion Technology, 2013, 34(11): 1130-1136.)
[5] Bradley D, Hicks R A, Lawes M S, et al. The Measurement of Laminar Burning Velocity and Markstein Numbers for Iso-Octane-Air and Iso-Octane n-Heptane-Air Mixture at Elevated Temperature and Pressure in an Explosion Bomb[J]. Combustion and Flame, 1998, 115(1).
[6] Huang Y, Sung C J, Eng J A. Laminar Flame of Primary Reference Fuels and Reformer Gas Mixture[J]. Combustion and Flame, 2004, 139(2): 239-251.
[7] Kamal K. Global Combustion Response of Practical Hydrocarbon Fuels: n-Heptane, Iso-Octane, n-Decane and Ethylene[D].Ohio: Case Western Reserve University,2007.
[8] 于维铭, 钟北京, 袁振, 等. 异辛烷/空气对冲火焰实验与计算分析[J]. 推进技术, 2014, 35(1): 70-76.(YU Wei-ming, ZHONG Bei-jing, YUAN Zhen, et al. Experiment and Numerical Investigation on Counterflow Twin-Flame of Isooctane/Air[J]. Journal of Propulsion Technology, 2014, 35(1): 70-76.)
[9] 张旭, 王利, 林言中, 等. 超燃冲压发动机总体性能分析[J]. 推进技术, 2014, 35(2): 157-165.(ZHANG Xu, WANG Li, LIN Yan-zhong, et al. Analysis of Overall Scramjet Performance[J]. Journal of Propulsion Technology, 2014, 35(2): 157-165.)
[10] Prathap C, Anjan Ray, Ravi M R. Investigation of Dilution Effects on the Laminar Burning Velocity and Flame Stability of Syngas Fuels at Atmospheric Condition[J].Combustion and Flame, 2008, 155(2): 145-160.
[11] Qin X, Ju Y G. Measurement of Burning Velocities of Dimethyl Ether and Air Premixed at Elevated Pressure[J]. Proceedings of the Combustion Institute, 2005, 30(1): 223-240.
[12] 张烜, 黄佐华, 喻武, 等. 高温高压条件下甲醇裂解气-空气-稀释气层流火焰传播速度和马克斯坦长度研究[J]. 内燃机学报, 2010, 28(3): 28-33.
[13] 陶志强. 中低热值气层流火焰特性的数值模拟和实验研究[M]. 北京:中国科学院工程热物理研究所, 2012.
[14] 秦凤华. 层流预混燃烧火焰的数值研究[M]. 沈阳:东北大学, 2011.
[15] 郭俊江, 华晓莜, 王繁, 等. 采用系统的方法自动构建链烷烃高温燃烧反应机理[J]. 物理化学学报, 2014, 30(6): 1027-1041.
[16] Zheng Chen, Michael P Burke, Yiguang Ju. Effects of Lewis Number and Ignition Energy on the Determination of Laminar Flame Speed Using Propagating Spherical Flames[J]. Proceedings of the Combustion Institute,2009, 32(9): 1253-1260.
[17] Davis S G, Law C K. Laminar Flame Speed and Oxidation Kinetics of Iso-Octane-Air and n-Heptane-Air Flame[C]. France: Twenty-Seventh Symposium (International) on Combustion, 1998: 521-527.
[18] Kwon O C, Hassan M I, Faeth G M. Flame/Stretch Interaction of Premixed Fuelvapor/O₂/N2 Flames[J]. Journal of Propulsion and Power, 2000, 16(3): 513-522.
[19] Xinyi Zhang, Chenglong Tang, HuibinYu, et al. Laminar Flame Characteristics of Iso-Octane/n-Butane Blend-Air Mixture at Elevated Temperatures[J]. Energy & Fuels, 2013, 27: 2327-2335.(编辑:史亚红)　　　　　　　　　　　　　*　收稿日期:2014-10-30；修订日期:2014-12-16。基金项目:国家自然科学基金(11372356)。作者简介:杨波(1992—),男,硕士生,研究领域为碳氢燃料预混层流燃烧。E-mail: 113881530@qq.com