旋流燃烧NO生成的USM湍流反应模型  

A UNIFIED SECOND-ORDER MOMENT TURBULENCECHEMISTRY MODEL OF NO FORMATION IN SWIRLING COMBUSTION

作　　者：王方[1] 周力行[1] 张健[1] 

机构地区：[1]清华大学力学系煤的清洁燃烧国家重点实验室,北京100084

出　　处：《工程热物理学报》2003年第4期691-694,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究专项经费资助项目(No.G1999-0222-07)

摘　　要：用统一二阶矩(USM)湍流反应模型对不同旋流数下甲烷-空气旋流燃烧NO生成进行了数值模拟,并和EBU-Arrhenius(E-A)燃烧模型对燃烧的模拟结果和简化PDF湍流反应模型对NO生成的模拟结果以及相应的实验结果进行对比。结果表明,USM模型显著地优于E-A模型和简化PDF模型。E-A模型不能合理地模拟有限反应动力学,而简化PDF模型用两个单变量PDF的乘积代替联合PDF,大大地低估了NO湍流反应率。USM模型预报结果和实验结果符合最好。A unified second-order moment (USM) turbulence-chemistry model is used to simulate NO formation in methane-air swirling combustion for different swirl numbers, and the simulation results are compared with those using the EBU-Arrhenius (E-A) combustion model and the simplified PDF turbulent reaction model of NO formation and the corresponding measurement results. The results indicate that the USM model is obviously better than the E-A model and the simplified PDF model. The E-A model cannot reasonably simulate the finite-rate kinetics, while the simplified PDF model, using a product of two single-variable PDF's instead of a joint PDF, seriously under-predicts the NO reaction rate. The USM model gives the best agreement with the experimental results.

关 键 词：NO生成 湍流旋流燃烧 二阶矩模型 

分 类 号：TK16[动力工程及工程热物理—热能工程]