加温加压条件下复杂旋流液雾火焰流场测量

高健庭; 张弛; 安强; 薛鑫; 陶超; 范兴州

doi:10.13224/j.cnki.jasp.20230621

加温加压条件下复杂旋流液雾火焰流场测量

doi: 10.13224/j.cnki.jasp.20230621

高健庭^{1, 2, 3,},
张弛^{2, 3},
安强^{2, 3,*, ,},
薛鑫^{2, 3},
陶超^{2, 3},
范兴州^{2, 3, 4}

1.
中国航空规划设计研究总院有限公司，北京 100120
2.
北京航空航天大学航空发动机研究院，北京 100191
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 100191
4.
中国工程物理研究院流体物理研究所，四川绵阳 621900

基金项目: 国家自然科学基金（52206130，92041001）；航空发动机气动热力国家级重点实验室基金（2021-JCJQ-LB-062-0307，2022-JCJQ-LB-062-0305）；国家科技重大专项（J2019-Ⅲ-0014-0057，J2019-Ⅲ-0012-0055）

详细信息

作者简介:
高健庭（1997-），男，硕士生，主要研究方向为燃烧室光学诊断。E-mail：zy2032103@buaa.edu.cn

通讯作者:
安强（1988-），男，助理研究员，博士，主要研究方向为发动机燃烧和光学诊断。E-mail：anqiang@buaa.edu.cn

中图分类号: V231.2
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出版历程
- 收稿日期: 2023-09-27
- 网络出版日期: 2025-08-19

Flow field measurements for complex swirl spray flames at elevated pressures and temperatures

GAO Jianting^{1, 2, 3
,},
ZHANG Chi^{2, 3},
AN Qiang^{2, 3,*
, ,},
XUE Xin^{2, 3},
TAO Chao^{2, 3},
FAN Xingzhou^{2, 3, 4}

1.
China Aviation Planning and Design Institute （Group） Company，Beijing 100120，China
2.
Research Institute of Aero-Engine，Beihang University，Beijing 100191，China
3.
National Key Laboratory of Science and Technology on Aero-Engine Thermodynamics，Beihang University，Beijing 100191，China
4.
Institute of Fluid Physics，China Academy of Engineering Physics，Mianyang Sichuan 621900，China

摘要

摘要:
为研究近真实工况下航发中心分级燃烧室内部流动特性，在燃烧室最高进口压力为1 MPa、进口温度为700 K条件下对中心分级燃烧室分层旋流液雾火焰开展粒子图像测速（particle image velocimetry，PIV），并辅以煤油平面激光诱导荧光（kerosene planar laser induced fluorescence，kerosene PLIF）和CH*化学自发光对油雾场和火焰释热场进行光学诊断。为应对加温加压高亮液雾火焰的诸多测试挑战，在粒子散播、试验流程、光路布置、成像滤波、图像处理等方面进行了优化。多物理场数据分析结果表明：在进口温度、压力及燃油质量流量不变时，随着进口空气质量流量增加，主、预燃级气流耦合增强；中心回流区提前，涡核远离中心；台阶回流区长度减小；预燃级局部当量比下降，反应更接近化学恰当比，释热增强且火焰重心远离中心。通过近真实工况下的光学诊断数据，证明了流场、组分场和释热场的紧密关联。
- 中心分级燃烧室 /
- 流动特性 /
- 分层旋流液雾火焰 /
- 粒子图像测速（PIV） /
- 光学诊断
Abstract:
In order to study the flow field characteristics of centrally staged combustor, optical diagnostics under inlet pressure of up to 1 MPa and inlet temperature up to 700 K, were carried out by using particle image velocimetry (PIV), kerosene planar laser induced fluorescence (PLIF), and CH* chemiluminescence. To tackle the technical challenges encountered in PIV measurements of the highly luminescent spray flames, multiple aspects in the experiments were carefully optimized, including particle seeding, operation procedure, optical path layout, imaging filtering, and image pre-processing. Under constant inlet temperature, pressure, and fuel flow rate, with the increase of air flow rate, the following phenomena were observed from the optical data: coupling between the main and pilot flows was enhanced; the core of the primary recirculation zone (PRZ) moved upstream and away from the centerline; the lip recirculation zone (LRZ) was shortened; decrease in the local equivalent ratio of the pilot stage resulted in more stoichiometric reactions, and the overall heat release was enhanced, with the flame centroid moving away from the combustor centerline.
- centrally staged combustor /
- flow field characteristics /
- stratified swirl spray flame /
- particle image velocimetry (PIV) /
- optical diagnostics

HTML

图 1 加温加压燃烧光学诊断试验台

Figure 1. Pre-heated and pressurized combustion rig for optical diagnostics

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图 2 低排放旋流器及燃油喷射系统

Figure 2. Low-emissions swirler and fuel injection system

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图 3 高亮液雾火焰照片

Figure 3. Direct photo of the highly luminescent spray flame

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图 4 PIV时序控制图

Figure 4. Triggering sequence diagram for PIV experiments

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图 5 PIV的有效视场（单位：mm）

Figure 5. Effective field of view of PIV （unit：mm）

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图 6 Case 4 PIV原始瞬时粒子图像的预处理过程

Figure 6. Pre-processing of instantaneous raw particle PIV image of case 4

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图 7 Case 4中心截面的时均流场

Figure 7. Time-averaged flow field of case 4

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图 8 3种工况下时均轴向速度云图叠加速度矢量（上）与流线图（下）

Figure 8. Time-averaged axial velocity contour overlaid with velocity vectors （top） and streamlines （bottom） in three cases

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图 9 3种工况下时均涡量（上）和瞬态涡量分布（下）叠加速度矢量

Figure 9. Time-averaged （top） and instantaneous （bottom） vorticity contour overlaid with velocity vectors in three cases

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图 10 不同轴向位置下3种工况的时均轴向速度分布

Figure 10. Time-averaged axial velocity profiles at various axial positions in three cases

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图 11 3种工况下时均kerosene PLIF云图叠加速度矢量（上）和流线（下）

Figure 11. Time-averaged kerosene PLIF contour overlaid with velocity vectors （top） and streamlines （bottom） in three cases

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图 12 3种工况下时均CH*化学自发光Abel逆变换图像（上）和kerosene PLIF（下）叠加速度矢量

Figure 12. Time-averaged CH* chemiluminescence by Abel inverse transform （top） and kerosene PLIF （bottom） images overlaid with velocity vectors in three cases

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表 1 试验工况

Table 1. Test conditions

工况	$ {\dot{m}}_{\mathrm{a}\mathrm{i}\mathrm{r}} $/（kg/s）	$ {T}_{\text{3}} $/K	$ {p}_{\text{3}} $/MPa	$ \phi_{\text{tot}} $	R_pf/%
Case 1	0.5	650	0.4	0.46	52
Case 2	0.6	650	0.4	0.38	52
Case 3	0.7	650	0.4	0.33	52
Case 4	0.764	700	1	0.49	27

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