中文摘要：

本文联合使用计算流体软件FLUENT和采用详细化学反应机理计算空间和表面催化反应的化学动力学软件DETCHEM对甲烷空气预混气体在微通道内催化燃烧的情况进行了数值模拟。计算结果表明，在微通道内，通过导热壁的轴向间的传热，预热了入口气体，使甲烷燃烧得更加充分；空间反应同样可以发生，不再是可以被忽略的部分；而且燃料混合物的入口流速对表面催化反应有很重要的影响。

英文摘要：

Catalytic combustion of CH4/air mixture in microtube was investigated numerically by using FLUENT coupled to external subroutine DETCHEM that modeled detailed chemistry. The results show that the conducting wall in microtube preheats the inlet mixture by axial heat transferring. Homogeneous reaction can not be neglected. And inlet velocity of mixture plays a significant role in catalytic reaction.