天然气在不同初始温度和压力下的燃烧特性研究  

COMBUSTION CHARACTERISTICS OF NATURAL GAS AT VARIOUS INITIAL TEMPERATURE AND PRESSURE

作　　者：路林[1] 常铭[1] 苗海燕[1] 黄佐华[1] 蒋德明[1] 曾科[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《工程热物理学报》2009年第10期1771-1774,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.50606029)

摘　　要：利用定容燃烧弹研究了不同初始温度和初始压力下的天然气燃烧特性,分析了初始温度、初始压力和当量比对其燃烧过程的影响。研究结果表明:随着初始温度的升高(300～450 K),天然气质量燃烧速率明显增加,燃烧持续期和火焰发展期显著缩短。随着初始压力的升高(0.1～0.75 MPa),天然气质量燃烧速率明显减慢,燃烧持续期和火焰发展期显著增长。且稀混合气和浓混合气条件下初始温度和初始压力的变化对燃烧持续期和火焰发展期的影响更明显。The combustion characteristics of natural gas are studied in a constant volume bomb at various equivalence ratios, initial temperature and pressure. The study shows that with an increase of initial temperature, the normalized mass burning rate increases and the flame developing duration and combustion duration decrease. With an increase of initial pressure, the normalized mass burning rate decreases obviously, the flame developing duration and combustion duration increase at various equivalence ratios. For both lean and rich combustion, the effects of initial temperature and pressure on combustion duration are quite obvious.

关 键 词：天然气 温度 压力 燃烧特性 定容燃烧弹 

分 类 号：TK412[动力工程及工程热物理—动力机械及工程]