微型发动机的燃烧模型和数值模拟  

Combustion Model and Numerical Simulation of Micro-Engine

作　　者：李德桃[1] 潘剑锋[1] 邓军[1] 杨文明[2] 薛宏 

机构地区：[1]江苏大学能源与动力学院,镇江212003 [2]新加坡国立大学 [3]美国加州州立工业大学,波摩拿ca92612

出　　处：《燃烧科学与技术》2003年第2期183-185,共3页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(50146008).

摘　　要：提出了微型发动机燃烧过程的数学模型,并对采用氢气为燃料的微型涡轮机中环形燃烧室内的燃烧,建立了阿累尼乌斯有限反应速率模型,在考虑对流和辐射传热损失的条件下,采用CFD软件包FLUENT进行了数值模拟.根据所得到的模拟结果分析了影响燃烧的主要因素:结构、燃料、质量流率、H2与空气比和壁面材料,提出了克服尺寸减小对燃烧带来的困难的途径.The mathematical model of combustion process in microergine was proposed.Based on Arrhenius limited reaction rate model,the combustion of hydrogen in combustor of micro turbine engine was simulated with FLUENT,in which the convection and radiation heat loss were considered.According to the results of simulation,the main factors which influenced the combustion including structure,fuel,mass flow rate,H2/air ratio and material of combustor were analyzed.Some method to overcome the challenge bring from the deflation of scale are presented.

关 键 词：微型发动机 燃烧室 数值模拟 氢气 微型涡轮机 燃烧室 阿累尼乌斯有限反应速率模型 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]