CH4/正癸烷混合燃料燃烧特性

刘宇; 孙震; 罗睿; 赵欢; 曾文; 陈保东

doi:10.13224/j.cnki.jasp.2018.04.015

CH4/正癸烷混合燃料燃烧特性

doi: 10.13224/j.cnki.jasp.2018.04.015

沈阳航空航天大学航空航天工程学部，沈阳 110136

基金项目: 国家自然科学基金(51606129)；辽宁省自然科学基金（201602577）；辽宁省教育厅科学研究一般项目（L2015404）

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出版历程
- 收稿日期: 2016-10-15
- 刊出日期: 2018-04-28

Combustion characteristics of methane/n-decane mixed fuel

摘要

摘要: 为研究CH4/正癸烷混合燃料的燃烧特性及燃烧稳定性，在定容燃烧弹中测量了初始压力为0.1MPa、初始温度为420K、当量比范围为0.8~1.5和甲烷摩尔分数为0~0.8时CH4/正癸烷混合燃料的火焰扩散速度、拉伸火焰传播速度、马克斯坦长度、无拉伸火焰传播速度和层流燃烧速度等，分析了甲烷摩尔分数对马克斯坦长度及层流燃烧速度等的影响。结果表明：当量比为1.3时，随着甲烷摩尔分数的增加，火焰发展末期，前锋面由网格形胞状结构发展为光滑球面，火焰稳定性增强；甲烷摩尔分数增加导致混合燃料马克斯坦长度随当量比增加而减小的趋势变慢，实验研究范围存在临界当量比，当量比小于1.2时，甲烷摩尔分数为0.8的混合燃料燃烧稳定性较差，而当量比大于1.2时，甲烷摩尔分数为0.8的混合燃料燃烧稳定性较好；当量比在1.0~1.3范围内，甲烷摩尔分数为0.2和0.4的混合燃料层流燃烧速度较快，而在实验测量当量比范围，甲烷摩尔分数为0.8的混合燃料层流燃烧速度较慢。
- 燃烧特性 /
- 燃烧稳定性 /
- 定容燃烧弹 /
- 马克斯坦长度 /
- 层流燃烧速度
Abstract: In order to study the combustion characteristics and combustion stability of CH4/n-decane mixed fuel, the diffusion velocity of flame radius, the stretched flame speed, Marksein length, unstretched flame speed and laminar burning velocity of CH4/n-decane mixture were measured experimentally in a constant volume chamber at initial pressure of 0.1MPa, initial temperature of 420K, over the equivalence ratios range of 0.8－1.5 and over the methane concentration range of 0－0.8. The influences of methane concentration on Marksein length and laminar burning velocity were investigated. Results showed that at equivalence ratio of 1.3, the observed cellular structure at the end of flame propagation disappeared with the increase of methane concentration and the flame front became smooth, along with the increase of the flame stability; the decreasing trend of Marksein length with the growing equivalence ratio became slower due to the increase of methane concentration, and there was a critical equivalence ratio, with the methane concentration of 0.8 the combustion stability was poor when the equivalence ratio was smaller than 1.2 and to the contrary the combustion stability was better when the equivalence ratio was bigger than 1.2; over the equivalence ratio of 1.0－1.3 the laminar burning velocities of mixed fuel with methane concentration of 0.2 and 0.4 were faster, and over the equivalence ratios range of experiment conditions the laminar burning velocities of mixed fuel with methane concentration of 0.8 were slower.
- combustion characteristics /
- combustion stability /
- constant volume chamber /
- Marksein length /
- laminar burning velocity

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参考文献(19)

[1]	柴建,张钟毓,李新,等.中国航空燃油消费分析及预测［J］.管理评论,2016,28(1):11-21.CHAI Jian,ZHANG Zhongyu,LI Xin,et al.Analysis and forecast of aviation fuel consumption in China［J］.Management Review,2016,28(1):11-21.(in Chinese)
[2]	杨万柳.国际航空排放全球治理的国际视域-以国际民航组织为中心［J］.北京理工大学学报(社会科学版),2015,17(4):123-128.YANG Wanliu.The international perspective of global governance on international aviation emissions:centering on ICAO［J］.Journal of Beijing Institute of Technology(Social Sciences Edition),2015,17(4):123-128.(in Chinese)
[3]	ZHANG Chi,HUI Xin,LIN Yuzhen,et al.Recent development in studies of alternative jet fuel combustion:progress,challenges,and opportunities［J］.Renewable and Sustainable Energy Reviews,2016,54:120-138.
[4]	HARI T K,YAAKOB Z,BINITHA N N.Aviation biofuel from renewable resources:routes,opportunities and challenges［J］.Renewable and Sustainable Energy Reviews,2015,42:1234-1244.
[5]	PEREIRA S R,FONTES T,COELHO M C.Can hydrogen or natural gas be alternatives for aviation:a life cycle assessment［J］.International Journal of Hydrogen Energy,2014,39(25):13266-13275.
[6]	刘爱虢,陈欣,陈保东,等.液化天然气作为航空燃料的发展趋势及特点分析［J］.航空动力学报,2016,31(6):1281-1288.LIU Aiguo,CHEN Xin,CHEN Baodong,et al.Development trend and characteristics of liquefied natural gas as the aviation fuel［J］.Journal of Aerospace Power,2016,31(6):1281-1288.(in Chinese)
[7]	余慧玲,曹春泉.液化天然气(LNG)作为飞机燃料的可行性及经济性分析［J］.民用飞机设计与研究,2015(1):109-112.YU Huling,CAO Chunquan.Analysis of the feasibility and economy for liquefied natural gas as aircraft fuel［J］.Civil Aircraft Design and Research,2015(1):109-112.(in Chinese)
[8]	吴良彦.用液化天然气作燃料的飞机［J］.石油石化节能,2000(9):32-33.
[9]	KAWA R.Benefit potential for a cost efficient duel fuel propulsion BWB［R］.AIAA-2013-0937,2013.
[10]	HU Erjiang,HANG Zuohua， HE Jiajia,et al.Experimental and numerical study on laminar burning characteristics of premixed methane-hydrogen-air flames［J］.International Journal of Hydrogen Energy,2009,34(11):4876-4888.
[11]	常铭，苗海燕，刘岩，等.高温高压下掺氢天然气的燃烧特性［J］.内燃机学报，2010,28(6):481-487.CHANG Ming,MIAO Haiyan,LIU Yan,et al.Combustion characteristics of hydrogen-enriched natural gas under elevated temperature and pressure［J］.Transactions of CSICE,2010,28(6):481-481.(in Chinese)
[12]	MITU M,GIURCAN V,RAZUS D,et al.Inert gas influence on the laminar burning velocity of methane-air mixtures［J］.Journal of Hazardous Materisals,2017,321(5):440-448.
[13]	汤成龙，司占博，张旭辉，等.稀释气对高甲烷含量天然气燃烧特性的影响［J］.西安交通大学学报，2015,49(9):41-46.TANG Chenglong,SI Zhanbo,ZHANG Xuhui,et al.Effects of diluents on the combustion characteristics of natural gas with high methane content［J］.Journal of Xian Jiaotong University,2015,49(9):41-46.(in Chinese)
[14]	汤成龙，张旭辉，司占博，等.甲烷/乙烷-空气预混层流燃烧特性试验和数值模拟研究［J］.内燃机工程，2016,37(1):83-88TANG Chenglong,ZHANG Xuhui,SI Zhanbo,et al.Experimental and numerical investigation on the laminar flame characteristics of CH4/C2H6-air mixture［J］.Chinese Internal Combustion Engine Engineering,2016,37(1):83-88.(in Chinese)
[15]	BALOO M,DARIANI B M,AKHLAGHI M,et al.Effects of pressure and temperature on laminar burning velocity and flame instability of iso-octane/methane fuel blend［J］.Fuel,2016,170(15):235-244.
[16]	BALOO M,DARIANI B M,AKHLAGHI M,et al.Effect of iso-octane/methane blend on laminar burning velocity and flame instability［J］.Fuel,2015,144(15):264-273.
[17]	WEI Haiqiao,GAO Dongzhi,ZHOU Lei,et al.Experimental study on laminar flame characteristics of methane-PRF95 dual fuel under lean burn conditions［J］.Fuel,2016,182(15):721-731.
[18]	BRADLEY D,HICKS R A,LAWES M,et al.The measurement of laminar burning velocities and Markstein numbers for iso-octane-air and iso-octane-n-heptane-air mixtures at elevated temperatures and pressures in an explosion bomb［J］.Combustion and Flame,1998,115(1):126-144.
[19]	何佳佳,胡二江,金春,等.不同初始温度下甲烷-空气混合气流燃烧速率的测定［J］.内燃机学报,2009,27(6):487-492.HE Jiajia,HU Erjiang,JIN Chun,et al.Measurement of laminar burning velocity of methane-air premixed flame at different initial temperatures［J］.Transactions of CSICE,2009,27(6):487-492.(in Chinese)