文献类型：期刊文献

英文题名：Influence of Different Core Mechanisms on Low-Temperature Combustion Characteristics of Large Hydrocarbon Fuels

作者：Guo, Junjiang Li, Shuhao Tang, Shiyun Xiao, Lihua Tan, Ningxin

第一作者：郭俊江

通信作者：Guo, JJ[1]

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China;[3]Zhengzhou Univ Aeronaut, Sch Aeronaut Engn, Zhengzhou 450046, Henan, Peoples R China;[4]Sichuan Univ, Sch Chem Engn, Chengdu 610005, Sichuan, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：2019

卷号：33

期号：8

起止页码：7835-7851

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20193307307661);Scopus(收录号：2-s2.0-85071712293);WOS:【SCI-EXPANDED(收录号:WOS:000481569100097)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 61751501), Guizhou Science and Technology Support Project (Contract no: Qiankehe Zhicheng [2019]2872), the Science and Technology Planning Project of Guizhou province (Qiankehejichu [2018]1066), and Civil-Military Integration in Guizhou Institute of Technology (KJZX17-016).

语种：英文

外文关键词：Fuels - Hydrocarbons - Ignition - Reaction kinetics - Sensitivity analysis - Temperature

摘要：The core mechanism is the cornerstone of combustion reaction kinetic models and has a crucial impact on the prediction accuracy of large hydrocarbon combustion mechanisms. At present, there remains no systematic method to compare the effect of different core mechanisms on the combustion mechanisms of large hydrocarbons. In this work, the effects of popular core mechanisms such as AramcoMech1.3, USC Mech II, AramcoMech3.0, and Foundational Fuel Chemistry Model (FFCM-1) on the combustion mechanisms of a large hydrocarbon were compared. Based on these core mechanisms, the low temperature combustion mechanisms of the large hydrocarbon (taking n-heptane as an example) have been developed. Meanwhile, the detailed numerical simulation and analysis of these mechanisms have been carried out. Concretely, using automatic generation software ReaxGen, coupled with AramcoMech1.3, USC Mech II, AramcoMech3.0, and FFCM-1, the detailed mechanisms named Mechanism-1(AramcoMech1.3), Mechanism-2(USC Mech II), Mechanism-3(AramcoMech3.0), and Mechanism-4(FFCM-1) for low-temperature combustion of n-heptane have been developed. Among them, the Mechanism-2(USC Mech II) can be referred to our previous work (http://www.cnki.com.cn/Article/CJFDTotalGCRB201411041.htm). These mechanisms were validated by the ignition delay time and concentration profiles of important species. Numerically predicted results show that Mechanism-1(AramcoMech1.3) is in better agreement with available experimental data than those of other mechanisms. Finally, the sensitivity analysis of these mechanisms was carried out to find the key reactions to ignition sensitivity under low-temperature combustion conditions, and to better understand the models' predicted performance, the differences in reaction pathway analysis of n-heptane were discussed.