同心环形回流旋流燃烧室流动特性与火焰结构特征研究

唐文彬; 陈翔; 曹婷婷; 金斯琴; 李伟; 颜应文

doi:10.13224/j.cnki.jasp.20240185

同心环形回流旋流燃烧室流动特性与火焰结构特征研究

doi: 10.13224/j.cnki.jasp.20240185

唐文彬^1,,
陈翔²,
曹婷婷¹,
金斯琴¹,
李伟²,
颜应文^2,*, ,

1.
中国航发湖南动力机械研究所，湖南株洲 412002
2.
南京航空航天大学能源与动力学院，南京 210016

基金项目: 国家科技重大专项（2017-Ⅲ-0006-0031）

详细信息

作者简介:
唐文彬（1988-），男，高级工程师，硕士，主要从事航空发动机燃烧设计。E-mail：690784795@qq.com

通讯作者:
颜应文（1978-），男，教授、博士生导师，博士，主要从事航空发动机燃烧技术相关研究。E-mail：yanyw@nuaa.edu.cn

中图分类号: V231.2
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出版历程
- 收稿日期: 2024-03-28
- 网络出版日期: 2025-10-23

Study on flow characteristics and flame structure characteristics of concentric annular recirculation swirl combustor

1.
Hunan Aviation Powerplant Research Institute，Aero Engine Corporation of China，Zhuzhou Hunan 412002，China
2.
College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

摘要

摘要:
为了满足下一代燃烧室的要求，创新性地提出了一种同心环形回流旋流燃烧室方案，并对其冷态流场特性与火焰结构进行了数值模拟与试验研究。试验采用PIV拍摄冷态流场，利用高速相机加装甲基滤镜拍摄火焰结构图像。研究结果表明：①同心环形回流旋流燃烧室可以形成一个圆周方向连通的完整的环形回流区，用来稳定火焰，火焰呈现“V”形结构；②仅预燃级喷嘴工作时，强化学反应区主要集中在火焰筒壁面的两侧，随当量比的增加而扩大，并在周向上的分布变得更加均匀；主燃级喷嘴工作后，虽然其当量比有所增加，但强化学反应区长度增加而宽度有所降低；③仅预燃级喷嘴工作时，内、外焰宽度随当量比以及进口空气流量的增加而增加；主燃级喷嘴工作后，内、外焰宽度发生突降，随后亦随当量比增加而增大；内、外侧火焰长度随当量比以及进口空气流量的增加而单调增加。
- 同心环形回流旋流燃烧室 /
- 环形旋流器 /
- 流动特性 /
- 火焰结构 /
- 化学反应区
Abstract:
In order to meet the requirements of the next generation combustion chamber, a concentric annular recirculation swirl combustor scheme was proposed innovatively. The numerical simulation and experimental study of the cold flow field characteristics and flame structure of the concentric annular recirculation swirl combustor were carried out. PIV was used to capture the cold flow field, and a high-speed camera equipped with a methyl filter was used to capture the flame structure image. The results showed that: (1) The concentric annular recirculation swirl combustor can form a complete annular recirculation zone connected in the circumferential direction to stabilize the flame, and the flame presented a “V” shape structure. (2) When only the pre-combustion stage nozzle was working, the strong chemical reaction zone was mainly concentrated on both sides of the flame tube wall, which expanded with the increase of the equivalence ratio and became more uniform in the circumferential direction. After the main combustion stage nozzle worked, although its equivalent ratio increased, the length of the strong chemical reaction zone increased and the width decreased. (3) When only the pre-combustion stage nozzle worked, the inner and outer flame widths increased with the increase of the equivalence ratio and the inlet air flow rate. After the main combustion stage nozzle worked, the width of the inner and outer flames dropped sharply, and then increased with the increase of the equivalence ratio. The inner and outer flame lengths increased monotonously with the increase of equivalence ratio and inlet air flow rate.
- concentric annular recirculation swirl combustor /
- annular cyclone /
- flow characteristics /
- flame structure /
- chemical reaction zone

HTML

图 1 同心环形回流旋流燃烧室结构示意图

Figure 1. Concentric annular recirculation swirl combustor structure diagram

下载: 全尺寸图片幻灯片

图 2 同心环形回流旋流燃烧室试验系统示意图

Figure 2. Schematic diagram of concentric annular recirculation swirl combustor experiment system

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图 3 PIV试验测量系统示意图

Figure 3. Schematic diagram of PIV experiment measurement system

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图 4 高速相机机位示意图

Figure 4. High-speed camera position schematic diagram

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图 5 计算域网格中心截面图

Figure 5. Grid center cross section of computational domain

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图 6 同心环形回流旋流燃烧室冷态流场特征

Figure 6. Cold flow field characteristics of concentric annular recirculation swirl combustor

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图 7 不同位置处轴向速度分布

Figure 7. Axial velocity distribution at different positions

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图 8 同心环形回流旋流燃烧室三维回流区示意图

Figure 8. Three-dimensional recirculation zone diagram of concentric annular recirculation swirl combustor

下载: 全尺寸图片幻灯片

图 9 同心环形回流旋流燃烧室火焰结构图像（$\dot m_{\mathrm{a}} $=120 g/s）

Figure 9. Flame structure image of concentric annular recirculation swirl combustor （$\dot m_{\mathrm{a}} $=120 g/s）

下载: 全尺寸图片幻灯片

图 10 火焰结火焰结构示意图

Figure 10. Flame structure diagram of flame knot

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图 11 火焰结构特征参数随当量比及进口流量变化的影响

Figure 11. Influence of the characteristic parameters of flame structure with the change of oil-gas ratio and inlet flow rate

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表 1 工况参数

Table 1. Working condition parameters

工况	${\dot m_{\mathrm{a}}}$/（g/s）	${\dot m_{{\text{fp}}}}$/（g/s）	${\dot m_{{\text{fm}}}}$/（g/s）	φ
Case 1	180	0	0	0
Case 2	80	1.2	0	0.26
Case 3	80	1.36	0	0.29
Case 4	80	1.6	0	0.34
Case 5	120	1.8	0	0.26
Case 6	120	2.04	0	0.29
Case 7	120	2.4	0	0.34
Case 8	120	1	2	0.43
Case 9	120	1.2	2.4	0.52
Case 10	180	1.5	3	0.43
Case 11	180	1.8	3.6	0.52

下载: 导出CSV

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