中心分级燃烧室主燃级出口张角对NOx排放影响

王季成; 林宇震; 赵硕; 朱玉康; 韩啸; 王建臣

doi:10.13224/j.cnki.jasp.20230760

中心分级燃烧室主燃级出口张角对NOx排放影响

doi: 10.13224/j.cnki.jasp.20230760

王季成¹,
林宇震^{2, 3},
赵硕⁴,
朱玉康⁵,
韩啸^{2, 3},
王建臣^{2, 3,*, ,}

1.
北京航空航天大学国家卓越工程师学院，北京 102206
2.
北京航空航天大学航空发动机研究院，北京 102206
3.
北京航空航天大学航空发动机气动热力国家级重点实验室，北京 102206
4.
中国航发湖南动力机械研究所，湖南株洲 412002
5.
长春市科学技术协会，长春 130000

基金项目: 航空发动机及燃气轮机基础科学中心项目（P2022-A-Ⅱ-006-001）；国家科技重大专项（J2019-Ⅲ-0012-0055）；国家自然科学基金（52106128）

详细信息

作者简介:
王季成（2000-），男，硕士生，主要从事航空发动机低排放燃烧研究

通讯作者:
王建臣（1986-），男，助理研究员，博士，主要从事航空发动机低排放燃烧研究。E-mail：wangjianchen@buaa.edu.cn

中图分类号: V231.2
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出版历程
- 收稿日期: 2023-12-01
- 网络出版日期: 2025-05-14

Effect of main combustion stage outlet angle of central staged combustor on NOx emission

WANG Jicheng¹,
LIN Yuzhen^{2, 3},
ZHAO Shuo⁴,
ZHU Yukang⁵,
HAN Xiao^{2, 3},
WANG Jianchen^{2, 3,*
, ,}

1.
National Superior College for Engineers，Beihang University，Beijing 102206，China
2.
Research Institute of Aero-Engine，Beihang University，Beijing 102206，China
3.
National Key Laboratory of Science and Technology on Aero-Engine Thermodynamics，Beihang University，Beijing 102206，China
4.
Hunan Aviation Powerplant Research Institute，Aero Engine Corporation of China，Zhuzhou Hunan 412002，China
5.
Changchun Association for Science and Technology，Changchun 130000，China

摘要

摘要:
为了探究主燃级出口张角对NOx排放的影响，针对采用4种不同主燃级出口张角的中心分级燃烧室，通过高温高压排放试验得到NOx排放数据，并利用光学诊断获取燃烧室内组分分布信息，最后结合数值模拟进一步分析燃烧室内热态回流区及温度分布。结果表明：随着主燃级出口张角的增大，NOx排放降低。在主燃级出口张角影响NOx排放的因素中，停留时间占主导作用。主燃级出口张角通过改变热态回流区的轴向长度和后驻点位置来影响停留时间。主燃级出口张角和出口附近气流的旋流张角是一致的。
- 中心分级燃烧室 /
- 主燃级出口张角 /
- 热态回流区 /
- 停留时间 /
- NOx排放
Abstract:
In order to investigate the effect of main combustion stage outlet angle on NOx emission characteristics, a central staged combustor with four different main combustion stage outlet angles of main combustion stages was used, NOx emission data were obtained through high-temperature and high-pressure emission tests, and the distribution information of components in the combustor were obtained through optical diagnosis, numerical simulation was conducted to further analyze the thermal reflux zone and temperature distribution in the combustor finally. The results showed that the NOx emission decreased with the increase of the outlet angle of main stage. Among the factors affecting NOx emission of the outlet angle of main stage, residence time played the dominant role. The residence time for the outlet angle of main stage on the residence time was affected by changing the axial length and posterior stationary point position of the thermal reflux zone. The outlet angle of main stage was consistent with the swirl angle of the airflow near the outlet.
- central staged combustor /
- outlet angle of main stage /
- thermal reflux zone /
- residence time /
- NOx emission

HTML

图 1 燃烧室头部及分层火焰示意图^[17]

Figure 1. Schematic diagram of combustor head and layered flame^[17]

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图 2 头部几何结构参数示意图

Figure 2. Schematic diagram of head geometry parameters

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图 3 试验系统总图

Figure 3. Experimental system diagram

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图 4 主燃级出口张角对NOx排放的影响

Figure 4. Effect of outlet angle of main stage on NOx emission

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图 5 4种方案NO*自发光图像

Figure 5. NO* autoluminescence images of four schemes

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图 6 4种方案OH*自发光图像

Figure 6. OH* autoluminescence images of four schemes

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图 7 计算流体域示意图（单位：mm）

Figure 7. Schematic diagram of computational fluid domain（unit：mm）

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图 8 Z=0 mm截面上不同轴向位置示意图（单位：mm）

Figure 8. Schematic diagram of different axial positions in Z=0 mm section （unit：mm）

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图 9 主燃级出口张角与旋流张角示意图

Figure 9. Schematic diagram of outlet angle of main stage and swirl angle

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图 10 不同方案热态回流区对比

Figure 10. Comparison of thermal reflux zones in different schemes

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图 11 温度分布与速度矢量图

Figure 11. Plot of temperature distribution and velocity vector

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图 12 不同方案轴向位置温度沿径向分布图

Figure 12. Radial distribution of temperature along axial positions of different schemes

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表 1 试验方案

Table 1. Experiment scheme

方案编号方案名称主燃级出口张角/（°）

A F15 15

B F20 20

C F25 25

D F30 30

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表 2 排放特性试验工况

Table 2. Emission characteristic test condition

p₃/MPa T₃/K $ {\dot m_{\text{a}}} $/（kg/s） FAR SR

0.5 600 0.698 0.0164 0.2

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