中文摘要：

本文采用详细表面反应机理对微通道中正丁烷的催化燃烧特性进行了数值模拟计算。重点研究了燃烧器壁面厚度、导热系数与对流换热系数对壁面温度分布及热量损失的影响。研究结果表明：适当增加燃烧器壁面厚度有利于热量水平方向传递，减小壁面温差；导热系数会极大地影响壁面热均匀性，对流换热系数是影响热量损失的关键因素。导热系数增大，有利于预热来流混合气，降低反应难度；同时，竖直方向的热量传递增加了反应器的散热量，不利于燃烧稳定。

英文摘要：

The catalytic combustion characteristics of n-butane/air mixture were investigated numerically by using Fluent with detailed surface reaction mechanism.This work is mainly focused on the effect of combustor wall thickness,thermal conductivity and convection heat transfer coefficient on combustion characteristic and flame stability.The results show that wall thickness will benefit horizontal heat transfer,leading to a more uniform temperature.Thermal conductivity has a significant effect on temperature uniformity and the convection heat transfer coefficient is the dominant factor on the heat loss.Large thermal conductivity is helpful for preheating the mixture and resulting in easier reaction.However,the increasing horizontal heat loss that comes along is against the combustion stability.