| 单头部模型燃烧室燃烧组织及NOx排放 |
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| 引用本文： | 王晶,张漫,张弛,王建臣.单头部模型燃烧室燃烧组织及NOx排放[J].航空动力学报,2023,38(1):94-103. |
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| 作者姓名： | 王晶 张漫 张弛 王建臣 |
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| 作者单位： | 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 |
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| 基金项目： | 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） |
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| 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。
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| 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 |
| 收稿时间： | 2022-07-20 |
Combustion organization and NOx emission in a single sector model combustor |
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| Affiliation: | 1.Advanced Technology Research Department，Commercial Aircraft Engine Company Limited，Aero Engine Corporation of China，Shanghai 200241，China2.Research Institute of Aero-Engine，Beihang University，Beijing 100191，China |
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| Abstract: | 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. |
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