单头部模型燃烧室燃烧组织及NOx排放  

Combustion organization and NOx emission in a single sector model combustor

作　　者：王晶 张漫 张弛[2] 王建臣[2] WANG Jing;ZHANG Man;ZHANG Chi;WANG Jianchen(Advanced Technology Research Department,Commercial Aircraft Engine Company Limited,Aero Engine Corporation of China,Shanghai 200241,China;Research Institute of Aero-Engine,Beihang University,Beijing 100191,China)

机构地区：[1]中国航发商用航空发动机有限责任公司先进技术研究部,上海200241 [2]北京航空航天大学航空发动机研究院,北京100191

出　　处：《航空动力学报》2023年第1期94-103,共10页Journal of Aerospace Power

基　　金：国家自然科学基金(U2141221,52076136);国家科技重大专项(2019-Ⅲ-0002-0045,2017-Ⅲ-0004-0028)。

摘　　要：采用光学诊断与三维数值模拟结合的方式,研究了中心分级贫油预混预蒸发模型燃烧室燃烧组织与NOx生成特征。试验测量了模型燃烧室流速、燃油、OH和NO组分浓度分布。通过与试验结果对比,采用基于雷诺平均Navier-Stokes方程的方法对流场的预测误差为13.9%,喷雾张角预测误差为6.0%,预测的OH和NO组分分布特征与试验测量结果基本一致。数值结果表明,在单头部模型燃烧室中,主、预燃级火焰以弱耦合的方式组织燃烧,且大部分NO在预燃级高温区域生成。燃油分级比的变化(0.15~0.30)不影响燃烧室流动与火焰分布特征,但对燃烧室出口NOx生成量有一定影响,NOx生成量随着分级比增大而减少。Combustion organization and NOx formation characteristics in a single sector model lean premixed pre-vaporized combustor were investigated by optical experiments and 3-dimensional numerical simulations. The flow field,spray field,OH and NO species field in the combustor were simulated by the Reynolds-averaged Navier-Stokes method and then compared with the experimental results. It was found that the prediction errors of the flow field and spray angle were 13.9% and 6.0%, respectively. The predicted OH and NO distribution characteristics were in good agreement with the experimental results.The results showed that the main and pilot flames organized combustion in a weakly coupled way,and most NO was generated in high temperature region located in the pilot stage. The variation(0.15-0.30) of fuel staging ratio did not affect the flow and combustion structure,but it had a certain influence on the NO emission,which decreased with the increase of the fuel staging ratio.

关 键 词：燃烧组织 NOX排放 贫油预混预蒸发燃烧室 分级比 雷诺平均Navier-Stokes方程 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]