微型燃气轮机燃烧室性能的数值研究  

Numerical Study on Combustion and Flow in A Micro Turbine Annular Combustor

作　　者：张文普[1] 丰镇平[1] 

机构地区：[1]西安交通大学叶轮机械研究所,陕西西安710049

出　　处：《燃气轮机技术》2003年第2期26-30,共5页Gas Turbine Technology

基　　金：国家863计划项目(2002AA503020);西安交通大学创新研究群体项目。

摘　　要：针对Capstone公司的C30微型燃气轮机的燃烧室,采用κ-ε湍流模型、EBU Arrhenius湍流燃烧模型描述其燃烧流动,采用扩展Zeldovich机制描述NOx生成;应用分区结构化网格和SIMPLE算法求解控制方程,进行了三维燃烧流动的数值模拟研究,同时对燃烧室的整体性能进行了分析。通过数值计算及结果分析,着重研究了环型贫燃预混燃烧室的燃烧组织形式对燃烧室性能的影响,并探讨了流动控制板对燃烧室内燃烧流动和燃烧室出口NOx分布的影响。数值研究的主要目的是配合新型微型燃气轮机的研制,获得微型燃气轮机燃烧室的设计经验,为研制既有高燃烧效率和燃烧稳定性,又有低NOx排放特性的燃烧室奠定基础。Three dimensional reactive flow in a complex annular combustor of Capstone 30 kW micro gas turbine was studied numerically using SIMPLE algorithm.The κ ε turbulence model,and the EBU Arrhenius turbulent combustion model were applied to predict the real combustion flow in the combustor.The extended Zeldovich NO x formation mechanism was used to calculate NO x emissions from combustion.The numerical results revel the effect of combustion organizing in a lean fuel pre mixed annular combustor on the combustor performance,and the influence of flow control plate on the combustion flow and the NO x distribution at Combustor exit.The present study is helpful to the combustor design of micro gas turbine with high combustion efficiency,combustion stability,and ultra low NO x emissions.

关 键 词：燃气轮机 燃烧室 预混燃烧 数值分析 

分 类 号：TK473.2[动力工程及工程热物理—动力机械及工程]