旋流器套筒扩张角对燃烧室出口温度分布的影响

郑剑文; 江立军; 刘涛; 唐超; 文一帆

doi:10.13224/j.cnki.jasp.20240164

旋流器套筒扩张角对燃烧室出口温度分布的影响

doi: 10.13224/j.cnki.jasp.20240164

中国航发湖南动力机械研究所，湖南株洲 412002

详细信息

作者简介:
郑剑文（1989-），男，高级工程师，硕士，主要从事航空发动机燃烧室设计。E-mail：263378217@qq.com

中图分类号: V231.2
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- 被引次数: 0
出版历程
- 收稿日期: 2024-03-21
- 网络出版日期: 2024-05-24

Effects of swirler sleeve angle on combustor exit temperature distribution

Hunan Aviation Powerplant Research Institute，Aero Engine Corporation of China，Zhuzhou Hunan 412002，China

摘要

摘要:
为研究旋流器套筒扩张角变化对燃烧室出口温度分布的影响，针对配装套筒扩张角分别为90°、80°、70°和60°共4种方案双级旋流器的全环回流燃烧室开展了出口温度分布试验，并结合三头部模型燃烧室粒子成像测速仪流场试验结果对其影响原因进行了分析。结果表明：随着套筒扩张角由90°减小为60°，出口周向温度分布均匀性变差，出口温度分布系数（OTDF）由0.198上升到0.334。套筒扩张角变化对出口径向温度分布曲线的影响较小，出口径向温度分布系数（RTDF）在0.077左右。在试验范围内，燃烧室出口温度分布品质随套筒扩张角的减小而恶化。
- 燃烧室 /
- 双级旋流器 /
- 套筒扩张角 /
- 出口温度分布 /
- 流场
Abstract:
In order to understand the effects of swirler sleeve angle on the combustor exit temperature distribution, experimental investigations were conducted on the full annular reverse-flow combustor of dual swirler with sleeve angle of 90°, 80°, 70° and 60°. The flow field characteristics of three sector model combustor obtained by PIV were used to analyzed the mechanism of sleeve angle effects. The experimental results indicated that when the sleeve angle decreased from 90° to 60°, the uniformity of exit circumferential temperature distribution was deteriorated and the overall temperature distribution factor (OTDF) was increased from 0.198 to 0.334. The exit radial temperature distribution curve was less affected by sleeve angle decreased, and the radial temperature distribution factor (RTDF) was maintained at about 0.077. Within the test range, the combustor exit temperature distribution property is deteriorated while the sleeve angle decreases.
- combustor /
- dual swirler /
- sleeve angle /
- exit temperature distribution /
- flow field

HTML

图 1 双级旋流器示意图

Figure 1. Schematic of dual swirler

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图 2 矩形三头部燃烧室光学试验件

Figure 2. Optical test piece of rectangular three sector combustor

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图 3 测量位置示意图

Figure 3. Schematic of measurement region

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图 4 PIV试验系统示意图

Figure 4. Schematic of PIV experimental system

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图 5 全环回流燃烧室试验件示意图

Figure 5. Schematic of annual reverse-flow combustor test piece

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图 6 燃烧室试验系统示意图

Figure 6. Schematic of combustor experimental system

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图 7 XY平面Y向速度云图及速度矢量图

Figure 7. Y-direction velocity contours and velocity vectors of XY measurement plane

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图 8 XY平面不同Y向位置处Y向速度速度分布

Figure 8. Y-velocity profiles at different Y-direction positions of XY measurement plane

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图 9 不同α下的OTDF和RTDF

Figure 9. OTDF and RTDF with different α

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图 10 不同α下的出口周向无量纲温度分布曲线

Figure 10. Exit circumferential normalized temperature distribution curve with different α

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图 11 不同α下的出口径向无量纲温度分布曲线

Figure 11. Exit radial normalized temperature distribution curve with different α

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表 1 双级旋流器方案

Table 1. Cases of dual swirler

方案 α/（°）

1 90
2 80
3 70
4 60

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表 2 流场试验参数

Table 2. Parameters of flow field experiment

参数数值或说明

进口空气温度室温
进出口空气压差/Pa 3000
压力波动范围/Pa ±20

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表 3 出口温度分布试验参数

Table 3. Parameters of exit temperature distribution experiment

参数数值

进口总压/MPa 1.3
进口总温/K 673
油气比 0.023

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表 4 主要设备名称及精度

Table 4. Names and precisions of main instruments

序号设备名称精度

1 标准流量喷嘴 ±1%

2 质量流量计 ±0.5%

3 压力测量系统 ±0.5%

4 K型热电偶 ±2 K

5 B型热电偶 ±5 K

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