喷油配置和联焰器位置对一体化加力燃烧室燃烧性能的影响

张宇; 王奉明; 王彦红; 穆林; 东明

doi:10.13224/j.cnki.jasp.20240540

喷油配置和联焰器位置对一体化加力燃烧室燃烧性能的影响

doi: 10.13224/j.cnki.jasp.20240540

张宇¹,
王奉明^{2, 3},
王彦红⁴,
穆林¹,
东明^{1, 3,*, ,}

1.
大连理工大学能源与动力学院海洋能源利用与节能教育部重点实验室，辽宁大连 116024
2.
南京航空航天大学能源与动力学院，南京 210016
3.
中国航发先进航空动力创新工作站，北京 101300
4.
东北电力大学能源与动力工程学院，吉林吉林 132012

基金项目: 受先进航空动力创新工作站资助（HKCX2022-01-017）

详细信息

作者简介:
张宇（1999-），男，博士生，研究方向为基于机器学习的加力燃烧室燃烧与冷却耦合机制

通讯作者:
东明（1979-），男，博士，教授，研究方向为加力燃烧室燃烧特性及结构优化问题。E-mail：dongming@dlut.edu.cn

中图分类号: V235.11
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- 被引次数: 0
出版历程
- 收稿日期: 2024-08-02
- 网络出版日期: 2026-02-10

Effects of fuel injection configuration and flame arrester position on combustion performance of integrated afterburner

ZHANG Yu¹,
WANG Fengming^{2, 3},
WANG Yanhong⁴,
MU Lin¹,
DONG Ming^{1, 3,*
, ,}

1.
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education，School of Energy and Power Engineering，Dalian University of Technology，Dalian Liaoning 116024，China
2.
College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
3.
Advance Jet Propulsion Innovation Center，Aero Engine Corporation of China，Beijing 101300，China
4.
School of Energy and Power Engineering，Northeast Electric Power University，Jilin Jilin 132012，China

摘要

摘要:
针对一体化加力燃烧室的结构优化和喷油优化问题，通过SST k-ω湍流模型和非预混燃烧模型考察了联焰器位置和喷油配置对一体化加力燃烧室燃烧特性的影响。讨论了温度场和速度场的分布状况。探究了燃油液滴、氧气、二氧化碳和水的分布状况。通过场协同阐述了燃烧特性与机理，基于总压恢复系数、温度均匀性系数、燃烧效率沿程分布评估了热态流场和燃烧性能。结果表明：燃烧室存在3个回流区，中心锥底部为内涵进气道突扩形成的反向回流，喷油杆上部回流区源于外涵进气对流场的冲击作用，下部回流区源于外涵进气与内涵进气的对冲作用。联焰器位置内缩，增强下方小空间的燃烧弱化上方大空间的燃烧，燃烧性能减弱。通过不同喷油配置的燃烧效率比较，上部、中部、下部喷油比例为3∶1∶2时加力燃烧室的燃烧性能最好。
- 一体化加力燃烧室 /
- 燃烧特性 /
- 联焰器位置 /
- 喷油配置 /
- 场协同
Abstract:
Aiming at the structural optimization and fuel injection optimization of integrated afterburner, effects of flame arrester position and fuel injection configuration on combustion characteristics of integrated afterburner were investigated based on the SST k-ω turbulence model and the non-premixed combustion model. The distributions of temperature field and velocity field were discussed, and the distributions of fuel droplets, oxygen, carbon dioxide, and water were explored. The combustion characteristic and mechanism were elucidated through the field synergy, and the thermal flow field and combustion performance were evaluated based on the axial distributions of total pressure recovery coefficient, temperature uniformity coefficient, and combustion efficiency. The results show that there are three recirculation zones in the combustion chamber. The bottom of central cone is a reverse recirculation formed by the sudden expansion of internal intake duct. The upper recirculation zone near the fuel injection rod is caused by the impact effect of external inlet on flow field, and the lower recirculation zone is caused by the opposing impact effect of external inlet and internal inlet. As the position of flame arrester shrinks inward, the combustion in the below small space is enhanced and the combustion in the above large space is weakened, resulting in a weakened combustion performance. By comparing the combustion efficiency of different fuel injection configurations, when the upper, middle, and lower fuel injection ratios are 3∶1∶2, the afterburner with the best combustion performance.
- integrated afterburner /
- combustion characteristics /
- flame arrester position /
- fuel injection configuration /
- field synergy

HTML

图 1 涡扇发动机一体化加力燃烧室

Figure 1. Integrated afterburner of turbofan engine

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图 2 计算域网格

Figure 2. Computational domain grids

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图 3 联焰器位置对温度分布的影响

Figure 3. Effect of the flame arrester position on temperature distribution

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图 4 联焰器位置对速度分布的影响

Figure 4. Effect of the flame arrester position on velocity distribution

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图 5 联焰器位置对燃油液滴分布的影响

Figure 5. Effect of the flame arrester position on fuel droplets distribution

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图 6 Case E1氧气、二氧化碳和水的分布情况

Figure 6. Distributions of oxygen, carbon dioxide, and water in Case E1

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图 7 联焰器位置对协同角分布的影响

Figure 7. Effect of the flame arrester position on synergy angle distribution

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图 8 联焰器位置对σ和ξ沿程分布的影响

Figure 8. Effect of the flame arrester position on axial distributions of σ and ξ

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图 9 联焰器位置对η沿程分布的影响

Figure 9. Effect of the flame arrester position on axial distributions η

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图 10 喷油配置对温度分布的影响

Figure 10. Effect of the fuel injection configuration on temperature distribution

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图 11 喷油配置对速度分布的影响

Figure 11. Effect of the fuel injection configuration on velocity distribution

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图 12 喷油配置对燃油液滴分布的影响

Figure 12. Effect of the fuel injection configuration on fuel droplets distribution

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图 13 Case F7氧气、二氧化碳和水的分布云图

Figure 13. Distributions of oxygen, carbon dioxide, and water in Case F7

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图 14 喷油配置对协同角分布的影响

Figure 14. Effect of the fuel injection configuration on synergy angle distribution

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图 15 喷油配置对σ、ξ和η沿程分布的影响

Figure 15. Effect of the fuel injection configuration on axial distributions of σ, ξ and η

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表 1 网格无关性分析

Table 1. Grid independence analysis

网格数量/10⁴ 出口温度/K 出口总压恢复系数

447 2145.42 0.8857
545 2144.45 0.8861
659 2143.75 0.8869
760 2143.49 0.8870
1340 2143.24 0.8870

下载: 导出CSV

表 2 试验数据与数值结果

Table 2. Experimental data and numerical results

数据来源 T_out/K σ/%

试验数据 1564 99.1
本文数值结果 1592 98.9

下载: 导出CSV

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