以惰性堆积床内甲烷/空气低速过滤燃烧为例,因次分析系统特征尺度,基于修正的单温度模型,提出一种封闭的耦合解析方法,对燃烧过程进行理论分析。研究了燃烧波波速、火焰传播速率、最高燃烧温度等燃烧特性参数,将计算结果与实验结果以及前人的理论结果进行对比。
This paper investigates the low-velocity filtration combustion of lean methane-air mixtures occurring in inert packed beds by using a modified one-temperature model. An order-of-magnitude estimate is provided for the scaling analysis, and analytical coupled solutions are proposed for the theoretical analysis. Some characteristic parameters, such as the combustion wave velocity, the flame speed and the peak flame temperature, are predicted. Analytical results have been compared with the related experiments and other existed theories.