Numerical study of inuence of surface reaction and heat-loss on ame intensity of methane-air ames
Numerical study of inuence of surface reaction and heat-loss on ame intensity of methane-air ames
复制标题
表面反应和热损失对甲烷-空气火焰强度影响的数值研究
DOI：
10.1088/1742-6596/557/1/012019
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
H. Yamashita
中科院分区：
文献类型：
--
作者：
N. Hayashi;H. Yamashita
本文报道了窄平行通道中自由基猝灭和热损失对体积火焰特性影响的数值研究。火焰-壁面相互作用是燃烧室的一个重要现象。特别是在小型燃烧室中，壁面对火焰特性的影响比普通燃烧室要大。壁面效应是由热损失和表面反应引起的。许多常见的非催化材料的表面反应可能会减弱或熄灭火焰，尽管催化壁的表面反应可以增强火焰。采用数值模拟方法研究了表面反应和热损失对非催化壁面的影响。在本研究中，模拟了两个平行板之间有或没有表面反应的二维狭缝燃烧器。壁温为500k和1200k。研究了两板间距变化时的火焰行为和放热率分布。
This paper reports a numerical study of influence of radical quenching and heat loss on bulk flame characteristics in narrow parallel channels. Flame-wall interaction is an important phenomenon on combustors. Especially, the wall effects on the flame characteristics in a small scale combustor become larger than those on normal scale one. The wall effects are caused by heat loss and surface reaction. The surface reaction on many common non-catalytic materials may weaken or quench the flames, although those for a catalytic wall can strengthen the flames. Authors have investigated the influence of the surface reaction and the heat loss on a noncatalytic wall using numerical simulation. In this study, a two-dimensional slit burner between two parallel plates with or without surface reaction is modelled. The wall temperature is 500 and 1200 K. The flame behavior and heat release rate distributions are examined when the distance between two plates is changed.