甲烷/空气预混气体在微通道中催化转化的数值模拟  

Numerical Simulation on Catalytic Combustion of CH_4/Air in Microchannel

作　　者：钟北京[1] 伍亨[1] 

机构地区：[1]清华大学航天航空学院,北京100084

出　　处：《燃烧科学与技术》2005年第1期1-5,共5页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(50376027);教育部博士点基金资助项目(20010003067).

摘　　要：用详细化学反应机理研究了微型直通道中甲烷/空气预混气体在镀Pt热壁上的催化燃烧问题.联合使用计算流体力学软件FLUENT和可以计算表面催化反应的化学反应动力学软件DETCHEM,对微型直通道中当量比在0.01～10.0范围之间的甲烷/空气预混气体的催化燃烧进行了数值模拟.计算结果表明,在微尺度催化燃烧中当量比和温度对甲烷催化转化率、转化速度有重要的影响.Catalytic combustion of CH4/air mixture in hot micro-channel plating Pt (as catalyst) was numerically investigated by using the commercial fluid dynamics code FLUENT coupled to external subroutine DETCHEM that modeled the surface chemistry in the channel. The homogeneous reactions were neglected in calculations. Equivalence ratio of CH4/air mixture is in the range of 0.01-10.0, and constant wall temperature was adopted as a boundary condition. The results indicated that equivalence ratio and temperature have important influence on catalytic combustion of CH4.

关 键 词：微尺度 催化燃烧 数值模拟 

分 类 号：O643.3[理学—物理化学]