基于化学动力学的甲烷燃烧性能数值模拟  

Simulation of Combustion Characteristics of Methane Based on Chemical Kinetic

作　　者：熊晶晶[1,2] 杨胜兵[1,2] 钟绍华[1,2] 

机构地区：[1]武汉理工大学现代汽车零部件技术湖北省重点实验室,湖北武汉430070 [2]汽车零部件技术湖北省协同创新中心,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2015年第3期322-326,共5页Journal of Wuhan University of Technology：Information & Management Engineering

摘　　要：对天然气中的主要成分甲烷的燃烧性能进行了研究,在化学动力学的基础上研究了甲烷的燃烧性能和燃烧过程,利用气象动力学软件Chemkin中的零维单区模型建立了甲烷的均质压燃燃烧仿真模型。提出掺入正庚烷来实现甲烷的均质压燃,研究了掺入不同比例的正庚烷对甲烷着火相位和初始条件要求的变化,研究结果表明,掺入少量的正庚烷即可降低进气温度,加入15%的正庚烷可使甲烷实现低温压燃,为天然气在均质压燃条件下的使用提供了较好的思路,对推广天然气在内燃机中的使用有重要参考价值。The combustion properties of methane—the main component of nature gas were studied. Combustion performance and combustion processes of methane were researched based on chemical kinetics. The simulation model of a single area of methane HCCI combustion was established using the zero- dimensional model in gas dynamics software Chemkin. Incorporating n-heptane was proposed to achieve HCCI of methane. The ignition phase and the change of initial conditions requirement of methane were studied under different n- heptanein corporation ratio; it concluded that incorporating little amounts of n- heptane can reduce the temperature of the intake air. The study provided a good idea to the use of natural gas under the conditions of HCCI,and it is important to promote the use of natural gas in internal combustion engines.

关 键 词：化学动力学 甲烷 均质压燃 引燃燃烧 

分 类 号：TE642[石油与天然气工程—油气加工工程]