掺混结构对脉冲爆震起爆及传播特性影响研究

邵恺元; 王永佳; 张永辉; 黄俊杰; 陈端; 冯再杰; 张启斌; 范玮

doi:10.13224/j.cnki.jasp.20250337

掺混结构对脉冲爆震起爆及传播特性影响研究

doi: 10.13224/j.cnki.jasp.20250337

邵恺元^1,,
王永佳²,
张永辉¹,
黄俊杰³,
陈端¹,
冯再杰¹,
张启斌^{1, 4,*, ,},
范玮^{1, 4}

1.
西北工业大学动力与能源学院，西安 710129
2.
中国航天科技集团有限公司航天推进技术研究院，西安 710100
3.
中国航发湖南动力机械研究所，湖南株洲 412002
4.
西北工业大学轻型涡轮动力国家重点实验室，西安 710129

基金项目: 国家自然科学基金（52176133，52106172）

详细信息

作者简介:
邵恺元（2000-），男，硕士生，主要研究方向为航空发动机燃烧室设计。E-mail：shaokaiyuan@mail.nwpu.edu.cn

通讯作者:
张启斌（1990-），男，副教授，博士，主要研究方向为爆震燃烧与爆震推进。E-mail：zhangqibin@nwpu.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: 2025-07-16
- 网络出版日期: 2025-10-24

Study on influence of mixing structure on pulse detonation wave initiation and propagation characteristics

1.
School of Power and Energy，Northwestern Polytechnical University，Xi’an 710129，China
2.
China Academy of Aerospace Propulsion，China Aerospace Science and Technology Corporation，Xi’an 710100，China
3.
Hunan Aviation Powerplant Research Institute，Aero Engine Corporation of China，Zhuzhou Hunan 412002，China
4.
National Key Laboratory of Science and Technology on Advanced Light-duty Gas-turbine，Northwestern Polytechnical University，Xi’an 710129，China

摘要

摘要:
为获得冲压模态下吸气式脉冲爆震发动机头部掺混结构对工作特性的影响，以汽油为燃料，空气为氧化剂，通过实验探索了掺混结构对于爆震起爆及传播特性的影响规律，实现了频率为12.5 Hz的稳定爆震，归纳出6种燃烧状态。结果表明：受旋流影响，相较于无旋流结构，有旋流结构对空气来流总压、汽油流量以及点火能量较为敏感，随着点火能量降低，不稳定燃烧持续时间加长，在点火能量下降至3 J时，会导致点火失败，稳定工作当量比范围更窄，但有旋流结构可进一步缩短起爆距离，增加掺混结构的阻塞比可拓宽稳定爆震的当量比范围。
- 吸气式脉冲爆震发动机 /
- 燃烧状态 /
- 爆震波 /
- 点火能量 /
- 当量比
Abstract:
In order to obtain the influences of the mixing structure of air-breathing pulse detonation engine head on the working characteristics in the ramjet mode, gasoline was used as fuel and air was used as oxidizer. The influences of the mixing structure on the detonation initiation and propagation characteristics were explored through experiments. A stable detonation with a frequency of 12.5 Hz was achieved, and six combustion modes were summarized. The results showed that compared with the non-swirl structure, the swirl structure was more sensitive to the total pressure of air flow, gasoline flow and ignition energy. As the ignition energy decreased, the duration of unstable combustion increased. When the ignition energy decreased to 3 J, it may lead to ignition failure and a narrower range of stable equivalence ratio. However, the swirl structure can further shorten the detonation distance, and increasing the blockage ratio of the mixing structure can broaden the equivalence ratio range of stable detonation.
- air-breathing pulse detonation engine /
- combustion mode /
- detonation wave /
- ignition energy /
- equivalence ratio

HTML

图 1 实验系统原理图（单位：mm）

Figure 1. Experimental system diagram （unit：mm）

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图 2 不同燃烧状态对应的压力波形

Figure 2. Pressure histories corresponding to different combustion modes

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图 3 无旋流掺混结构的燃烧状态分布图（R_BR=0.36）

Figure 3. Combustion mode of swirlless mixing structure （R_BR=0.36）

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图 4 旋流掺混结构的燃烧状态分布图（R_BR=0.36）

Figure 4. Combustion mode of swirling mixing structure （R_BR=0.36）

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图 5 NS-BR0.36中直管传播段的压力波形

Figure 5. Pressure histories in the propagation section of the straight pipe in NS-BR0.36

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图 6 S-BR0.36中直管传播段的压力波形

Figure 6. Pressure histories in the propagation section of the straight pipe in S-BR0.36

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图 7 旋流掺混结构的燃烧状态分布图（R_BR =0.61）

Figure 7. Combustion mode of swirling mixing structure（R_BR =0.61）

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图 8 S-BR0.61中直管传播段压力波形与波速对比

Figure 8. Pressure histories in the propagation section of the straight pipe in S-BR0.61

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图 9 不同点火能量下S-BR0.61的实验结果

Figure 9. Experimental results of S-BR0.61 under different ignition energies

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图 10 不同点火能量下NS-BR0.36的实验结果

Figure 10. Experimental results of NS-BR0.36 under different ignition energies

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