含颗粒甲烷/空气预混燃烧的51步简化机理  

51-Step reduced mechanism for methane/air containing particles premixed combustion

作　　者：孙宏科[1] 李丹[2] 马贵阳[3] 宋金瓯[1] 高雪利[2] 马鹏[1] 朱晓杰[4] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072 [2]中国石油天然气管道工程有限公司,河北廊坊065000 [3]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001 [4]天津大学机械工程学院,天津300072

出　　处：《化学工程》2013年第9期60-64,共5页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(51276126)

摘　　要：基于含颗粒甲烷燃烧详细化学动力学机理Gri-Mech3.0,采用层流预混火焰模型计算含颗粒甲烷/空气预混燃烧过程。通过对详细机理的计算结果进行敏感性分析以及产物速度分析提取骨干机理,再根据准稳态假设进一步简化,最终得到一套包含27种组分和51个基元反应的简化机理。将该51步简化机理与详细机理进行对比,结果表明:该简化机理在预测燃烧速度方面具有较高精度,能够在较大热力学参数变化范围内较好地预测含颗粒和不含颗粒2种情况的甲烷/空气预混燃烧现象。Based on the detailed chemical kinetic mechanism of methane containing particles combustion--Gri- Mech 3.0, the laminar premixed flame model was adopted to calculate the methane/air containing particles premixed combustion process. The backbone mechanism was extracted from the detail mechanism through sensitivity analysis and rate-of-production analysis of the calculation results. According to the quasi-steady state assumption, further reduction was carried out and a reduced mechanism with 27 species and 51 elementary reactions was obtained. Comparing the 51-step reduced mechanism with the detailed mechanism, the results show that the reduced mechanism has high accuracy in predicting the burning speed, and can predict the premixed combustion phenomenon of methane/air with and without particles in a wider variation range of thermodynamic parameters.

关 键 词：层流预混火焰 敏感性分析 简化机理 燃烧速度 

分 类 号：O643.11[理学—物理化学] TK16[理学—化学]