|本期目录/Table of Contents|

[1]李秀兰,谢 辉,陈 韬,等. DME-PRF 混合燃料化学动力学简化机理[J].燃烧科学与技术,2017,(06):547-553.[doi:DOI 10.11715/rskxjs.R201610028]
 Li Xiulan,Xie Hui,Chen Tao,et al. A Reduced DME-PRF Blended Fuel Chemical Kinetic Mechanism[J].Journal of Combustion Science and Technology,2017,(06):547-553.[doi:DOI 10.11715/rskxjs.R201610028]
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 DME-PRF 混合燃料化学动力学简化机理()
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《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2017年06
页码:
547-553
栏目:
出版日期:
2017-12-15

文章信息/Info

Title:
 A Reduced DME-PRF Blended Fuel Chemical Kinetic Mechanism
作者:
 李秀兰谢 辉陈 韬李之华赵 华
 天津大学内燃机燃烧学国家重点实验室,天津 300072
Author(s):
 Li XiulanXie HuiChen TaoLi ZhihuaZhao Hua
 State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China
关键词:
 二甲醚PRF简化机理激波管发动机实验
Keywords:
 dimethyl etherprimary reference fuel(PRF)reduced mechanismshock tubeengine experiments
分类号:
TK411
DOI:
DOI 10.11715/rskxjs.R201610028
文献标志码:
A
摘要:
 使用二甲醚燃料微引燃汽油混合燃烧过程可以改善汽油高稀释燃烧的可控性,并进一步改进其热效
率.为了从机理上研究微引燃混合燃烧过程,构建了一个可以兼顾不同 DME-PRF 掺混比例的化学反应动力学简
化模型.通过层级扩展的方式,从 CO/H2 内核基团的反应开始,在此基础上逐步加入 C1~C3 过渡反应机理模
块,以及 C4~C7/C8 的 PRF 子机理和 DME 子机理模块.最终得到一个包含 79 种组分 267 个基元反应的多组分
替代燃料简化机理.激波管实验验证结果表明,该机理可以较准确地预测不同温度、压力、当量比下单一燃料和
混合燃料的着火延迟;发动机实验证明,该机理对于着火相位和放热率有着不错的预测效果.
Abstract:
 The controllability of gasoline high dilution combustion process can be improved considerably with
dimethyl ether(DME)micro flame ignition,as well as its thermal efficiency.In order to research mechanism of
micro flame ignition combustion process,a reduced DME-PRF(primary reference fuel)blended mechanism applicable to different mixing proportion was proposed.The present DME-PRF multi-surrogate fuel chemical kinetic
mechanism was assembled in a hierarchal manner.Starting from small radicals and molecules(C0—C1),larger
molecules such as C1—C3 transition reaction module,C4—C7/C8 PRF subset and DME subset were added into it
gradually.The blended fuel mechanism consists of 79 species and 267 reactions.Combustion experiments of
blends of PRF and DME in a shock tube were conducted.The reduced blended fuel mechanism in this work was
well validated by ignition delay comparison with the experimental data in a shock tube over extensive ranges of
equivalence ratio,temperature and pressure for each single fuel component and their blends.Simulations of a
HCCI engine in CFD were also conducted.The results indicate overall satisfactory agreements between the simulation results and experimental data.

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备注/Memo

备注/Memo:
 收稿日期:2016-11-16.
基金项目:国家重点基础研究发展计划(973 计划)资助项目(2013CB228403);国家自然科学基金资助项目(91441122).
作者简介:李秀兰(1991— ),女,硕士研究生,lixiulan@tju.edu.cn.
通讯作者:谢 辉,男,博士,教授,xiehui@tju.edu.cn
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