燃气涡轮发动机燃烧特性的数值模拟  

Numerical Simulation of Combustion Characteristics in Gas Turbine Engine

作　　者：高勇[1,2] 加万里 闫龙[1,2] 高平强[1,2] 陈碧 张雷[1] GAO Yong;JIA Wanli;YAN Long;GAO Pingqiang;CHEN Bi;ZHANG Lei(College of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,Shaanxi China;Shaanxi key Laboratory of Low Metamorp Coal Clean Utilizationhic,Yulin 719000,Shaanxi China;Xi’an Aerospace Propulsion Test Technique Instute,Xi’an 710100,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]陕西省低变质煤洁净利用重点实验室,陕西榆林719000 [3]西安航天动力试验技术研究所,西安710100

出　　处：《河南科学》2018年第7期1025-1029,共5页Henan Science

基　　金：国家自然科学基金项目(21663034);陕西省教育厅专项科研项目(17JK0901);榆林市产学研合作项目(2016CXY-01)

摘　　要：运用计算流体动力学(CFD)对燃气涡轮发动机燃烧室内的燃烧特性进行了数值模拟,对燃烧室内的温度分布、污染物NO、生成物CO_2以及辐射强度进行了详细的分析对比.研究结果表明:在燃气涡轮发动机的燃烧过程中,初始条件下,在燃烧室的中部和尾部出现了高温区,在燃烧室的出口处生成了大量的NO,燃烧室内整体CO_2生成量较多,辐射强度呈现阶跃式升高的态势,在燃烧室出口处辐射强度最大;燃料浓度和氧气浓度降低时,燃烧室内的温度降低,NO和CO_2的生成量减少,从而使燃烧室内辐射强度大幅降低,且燃料浓度的变化对辐射传热的影响较大.The combustion characteristics in the combustion chamber of a gas turbine engine was simulated by computational fluid dynamics,the temperature distribution,pollutan(t NO),produc(t CO2)and radiation intensity of the combustion chamber were analyzed and compared.The results show that during the burning process of the gas turbine engine,in the initial condition,high temperature zone appears in the middle and tail of combustor,and a large amount of NO is generated at the exit of combustor.The total amount of CO2 produced in the combustor is large,the radiation intensity increases step by step,and the maximum radiation intensity is found at the exit of the combustor.The reduction of fuel concentration and oxygen concentration can reduce the amount of NO and CO2 production,which leads to a great decrease in radiation intensity in combustion chamber,and the influence of fuel concentration on radiation intensity is greater.

关 键 词：计算流体动力学 燃气涡轮发动机 燃烧特性 数值模拟 

分 类 号：O377.1[理学—流体力学] V231.2[理学—力学]