化学反应速率模型对高温空气燃烧特性的影响  

Influence of Finite Chemistry Reaction Rate Model on High Temperature Air Combustion

作　　者：刘赵淼[1] 郝海舟[1] 金艳梅[1] 刘华敏[1] 马重芳[2] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100022 [2]北京工业大学环境与能源工程学院,北京100022

出　　处：《北京工业大学学报》2007年第4期413-418,共6页Journal of Beijing University of Technology

基　　金：国家'九七三'计划资助项目(G200026309);北京市科委科技新星项目(H02082122012);北京市教委科技发展项目

摘　　要：为了探讨更恰当的高温空气燃烧研究方法,本文从燃烧机理的角度,通过数值分析方法研究了化学反应速率模型对高温空气燃烧特性的影响,分别研究了单步有限反应速率模型、多步有限反应速率模型和涡旋破散模型．在多步有限反应速率模型中,考虑了多个反应步和逆反应,所以该模型结果中的温度比其他2种低,进而抑制了热力NOx的生成,因此NOx排放较低．单步有限反应速率模型与涡旋破散模型的结果基本一致,这与单步模型所用的一些经验常数是在常温下得到的有很大关系．研究结果验证,无论是对单步反应还是多步反应,建立的模型都有较好的适用性．To get the more proper research methods to high temperature air combustion （HTAC）, the influence of finite chemistry reaction rate model on HTAC is numerically analyzed by making use of reaction mechanisms. The one-step-reaction finite chemistry reaction rate, four-step-reaction finite and eddy dissipation model are considered, respectively. The temperature of four-step-reaction finite is lower than that of the other two reaction models, because several positive and reverse reaction steps are investigated in it, and the lower temperature also restrains the formation of thermal NOx. It also leads to a little increase of CO2, which meets to the properties of HTAC, owing to the several reaction steps. The difference between the results of onestep-reaction finite and eddy dissipation model is little because the experiential parameters in one-step-reaction finite are obtained from normal temperature. It can be concluded that the finite chemistry reaction rate models have good adaptability, whether one-step-reaction or four-step-reaction.

关 键 词：高温空气燃烧 反应步 有限化学反应速率 

分 类 号：O363[理学—流体力学]