期刊
FUEL
卷 264, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2019.116858
关键词
Methane; Carbon dioxide addition; Laminar burning velocity; Chemical kinetics; Numerical decoupling method
资金
- National Natural Science Foundation of China [51876056, 51606060]
- Open Research Fund of Vehicle Measurement, Control and Safety Key Laboratory of Sichuan Province, Xihua University [SZJJ2016-079]
- Fundamental Research Funds for the Central Universities
Understanding the different effects of CO2 dilution on the laminar premixed flame is an effective strategy for combustion control. Thus, a chemical kinetic modeling study of laminar burning velocity (LBV) for CH4/air/CO2 mixtures coupling with a detailed chemical reaction mechanism was employed under a wide range of initial conditions. After validation and comparison, the FFCM 1.0 was selected for this study. Based on the numerical prediction of LBV, the decoupling method was carried out to separate the effects of diluent CO2, including dilution, thermal and chemical effects, whose variations show that the rising initial temperature facilitates the three effects whereas the elevated pressure shows the opposite impact. In order to explain the particular process physically and chemically, the parameters analysis, sensitivity analysis and mole fraction analysis methods were conducted, and the LBV enhancement made by per unit of fuel, relevant thermal parameters and the important active radicals were proved to be responsible for the variation of the three effects, respectively. Furthermore, the domain reactions contributing to chemical effect are reactions (R32) and (R62), respectively, as temperature and pressure vary. Through this work, it not only completes the research on the effect of CO2 dilution on the laminar [GRAPHICS] premixed flame, but also expands the commonly exploring initial conditions to a wide range, which provides the reference for the research on the operation condition and intensity setting of exhaust gas recirculation (EGR).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据