掺氢比对阵列微管火焰燃烧噪声的影响研究

罗守博; 张弛; 昌运鑫; 高安雯; 甘志超; 韩啸; 梁勇

doi:10.13224/j.cnki.jasp.20230606

掺氢比对阵列微管火焰燃烧噪声的影响研究

doi: 10.13224/j.cnki.jasp.20230606

罗守博^{1, 2, 3,},
张弛^{1, 2, 3},
昌运鑫^{1, 2, 3},
高安雯^{1, 2, 3},
甘志超^{1, 2, 3},
韩啸^{1, 2, 3,*, ,},
梁勇¹

1.
北京航空航天大学航空发动机研究院，北京 100191
2.
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
3.
先进航空发动机协同创新中心，北京 100191

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)；国家自然科学基金（52106128）；中央高校基本科研业务费专项资金（501XTCX2023146001）

详细信息

作者简介:
罗守博（2001-），男，博士生，研究领域为燃气轮机燃烧。E-mail：Luoshoubo@buaa.edu.cn

通讯作者:
韩啸（1993-），男，副研究员，博士，研究领域为燃烧振荡机理及控制、燃烧噪声。E-mail：han_xiao@buaa.edu.cn

中图分类号: V231.2
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- 被引次数: 0
出版历程
- 收稿日期: 2023-09-20
- 网络出版日期: 2024-08-20

Study on influence of hydrogen doping ratio on combustion noise of array microtube flame

LUO Shoubo^{1, 2, 3
,},
ZHANG Chi^{1, 2, 3},
CHANG Yunxin^{1, 2, 3},
GAO Anwen^{1, 2, 3},
GAN Zhichao^{1, 2, 3},
HAN Xiao^{1, 2, 3,*
, ,},
LIANG Yong¹

1.
Research Institute of Aero-Engine，Beihang University，Beijing 100191，China
2.
National Key Laboratory of Science and Technology on Aero-Engine Thermodynamics，Beihang University，Beijing 100191，China
3.
Collaborative Innovation Center for Advanced Aero-Engine，Beijing 100191，China

摘要

摘要:
针对不同掺混比例下甲烷/氢气的直接燃烧噪声声压级和频谱特征开展实验研究，采用阵列微管燃烧器在常温常压条件下组织甲烷掺氢燃烧，微管内采用螺旋叶片强化燃料与空气混合。实验采用传声器记录了燃烧噪声的压力脉动，对数据进行频谱分析，研究发现随着掺氢功率比（HPR）的增加，燃烧噪声频谱峰值逐渐由低频向高频转变，高频部分的功率谱密度有明显升高；在掺氢功率比一定时，直接燃烧噪声的声功率谱形状受当量比影响不显著。实验中使用分贝仪测量了A计权下的燃烧噪声分贝值。基准氢气当量比在0.5～0.8时，掺氢功率比从0变化至100%，燃烧噪声变化趋势一致，噪声分贝值约提高11 dB。本研究对直接燃烧噪声进行了拟合，得到了以甲烷燃烧噪声为归一化基准的甲烷掺氢燃烧噪声预测关系式。
- 微混燃烧 /
- 掺氢燃烧 /
- 燃烧噪声 /
- 频谱特征 /
- 噪声预测
Abstract:
Experimental research was conducted on the direct combustion noise sound pressure level and spectral characteristics of methane/hydrogen at different mixing ratios. An array microtube burner was utilized to organize methane-hydrogen combustion under ambient temperature and pressure conditions. Within the micro-tube, spiral blades were employed to enhance the mixing of fuel and air. Pressure pulsations of combustion noise were recorded using microphones, and the data were subjected to spectral analysis. The study revealed that with an increase in the hydrogen power ratio (HPR), the peak frequency of the combustion noise spectrum gradually shifted from low frequency to high frequency, and there was a noticeable increase in the power spectral density in the high-frequency portion. When the HPR was constant, the shape of the direct combustion noise power spectrum was not significantly affected by the equivalence ratio. Sound levels in decibels were measured using an A-weighted sound level meter. When the baseline hydrogen equivalence ratio was within the range of 0.5 to 0.8, the trend of combustion noise variation remained consistent as HPR increased from 0 to 100%, resulting in an approximate 11 dB increase in noise levels. This study fitted the direct combustion noise and obtained the prediction relationship of methane hydrogen-doped combustion noise using methane combustion noise as the normalized benchmark.
- micro-mixed combustion /
- hydrogen-doped combustion /
- combustion noise /
- spectral characteristics /
- noise prediction

HTML

图 1 阵列微管模型燃烧室实验系统示意图

Figure 1. Schematic diagram of the AMT experimental system

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图 2 微管内部结构示意图

Figure 2. Schematic diagram of the internal structure of microtubules

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图 3 P=16.55 kW，φ=0.6，时R_HPR=0～100%的火焰图像

Figure 3. Flame images of R_HPR=0—100% whenP=16.55 kW， φ=0.6

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图 4 不同当量比下火焰可见光长度随掺氢比的变化

Figure 4. Changes in flame visible light length with HPR under different reference equivalence ratios

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图 5 不同基准当量比下燃烧噪声随火焰可见光长度的变化

Figure 5. Changes in combustion noise with flame visible light length under different reference equivalence ratios

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图 6 φ=0.6时不同掺氢比下的频谱特征

Figure 6. Spectrum features under different hydrogen doping power ratios when φ=0.6

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图 7 不同基准当量比下的功率谱密度特征

Figure 7. PSD characteristics under different reference equivalence ratios

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图 8 φ=0.6时不同掺氢比下的功率谱密度特征

Figure 8. PSD characteristics under different hydrogen power ratios when φ=0.6

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图 9 不同掺氢比下的燃烧噪声随基准当量比的变化

Figure 9. Combustion noise changes with φ under different hydrogen power ratios

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图 10 不同基准当量比下的燃烧噪声随掺氢比的变化

Figure 10. Combustion noise changes with R_HPR under different reference equivalence ratios

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图 11 归一化噪声的拟合曲线

Figure 11. Fitting curve of normalized noise

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