摘要
首先基于2,5-二甲基呋喃（2,5-dimethylfuran,DMF）详细机理,运用峰值浓度分析法、反应路径分析法、敏感性分析法和反应速率分析法进行机理简化,构建了包含95种组分和352个反应的DMF简化动力学机理,并对激波管滞燃期和重要燃烧产物浓度进行验证。在此基础上,采用“解耦”思想耦合了柴油多组分替代物（正庚烷/甲苯/正己烯）简化机理,最终构建了一个包含123种组分和394个反应的柴油/DMF双燃料简化机理。研究结果表明：在较宽的当量比（0.5～2.0）和初始压力（0.1～8.0MPa）边界条件下,双燃料简化机理对滞燃期、射流搅拌反应器中物种摩尔分数、层流火焰速度等基础燃烧数据及零维单区内燃机模型组分生成规律吻合性较好。
The detailed mechanism of 2,5-dimethylfuran （DMF） was simplified by employing peak concentration analysis, reaction path analysis, sensitivity analysis and reaction rate analysis. As a resuk, a simplified mechanism with 95 species and 352 reactions was built, and the ignition delay of shock tube and the important combustion product concentration were verified respectively. Then, the DMF reduced mechanism was coupled with the simplified mechanism of diesel multieomponent substitutes （n-heptane/toluene/1-hexene） by using deeoupling methodology. Finally, a combined model with 123 species and 394 reactions for diesel/DMF blends was built. Validation results show that, the calculated values of diesel/DMF combined model have a good agreement with the basic combustion data including ignition delay period, jet stirring reactor species mole fraction and laminar burning velocity, as well as species generation rule in internal combustion engine model with zero dimensional and single area. This diesel/DMF combined model can provide a valuable approach for studying the combustion mechanism of practical diesel engines fuelled with diesel/DMF blends in the future.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2016年第3期123-132,共10页
Chinese Internal Combustion Engine Engineering
基金
国家自然科学基金项目(51366007)
云南省应用基础研究面上项目(2013FB019)
关键词
内燃机
2
5-二甲基呋喃
柴油
化学动力学
简化机理
IC engine
2,5-dimethylfuran（DMF）
diesel
chemical kinetics
simplified mechanism
作者简介
徐波峰（1991-），男，硕士生，主要研究方向为内燃机工作过程及排放控制，E—mail：545546380@qq．com；
陈贵升（联系人），副教授，博士，E-mail：cgs-yly@163．com。
