| 引用本文: | 钟战,王振国,孙明波.凹腔布置方案对气化煤油超声速燃烧特性的影响.[J].国防科技大学学报,2016,38(2):1-5,18.[点击复制] |
| ZHONG Zhan,WANG Zhenguo,SUN Mingbo.Effects of cavity arrangement on characteristics of supersonic combustion of vaporized kerosene[J].Journal of National University of Defense Technology,2016,38(2):1-5,18[点击复制] |
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| 凹腔布置方案对气化煤油超声速燃烧特性的影响 |
| 钟战1,2, 王振国1,2, 孙明波1,2 |
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(1.国防科技大学 航天科学与工程学院， 湖南 长沙 410073;2.
2.国防科技大学 高超声速冲压发动机技术重点实验室， 湖南 长沙 410073)
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| 摘要: |
| 针对两种凹腔布置方案，模拟马赫数6.0的来流条件，采用气化RP-3开展了一系列直连式燃烧试验。依据燃烧流场的可见光图像、燃烧室壁面静压分布和推力增益，对比分析了凹腔布置方案对气化煤油超声速燃烧特性的影响。结果表明，凹腔布置方案和当量比对燃烧室内的火焰分布、燃料的释热特性和发动机燃烧性能有显著影响。并联凹腔的火焰与释热主要集中在凹腔附近，燃料比冲对当量比不敏感；单凹腔的火焰与释热分布更加分散，燃料比冲随当量比的增加而提高。 |
| 关键词: 超燃冲压发动机 气化煤油 凹腔 当量比 燃烧特性 |
| DOI：10.11887/j.cn.201602001 |
| 投稿日期：2015-01-30 |
| 基金项目:国家自然科学基金资助项目（91016028,11142010）；全国优秀博士学位论文作者专项资金资助项目（201257） |
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| Effects of cavity arrangement on characteristics of supersonic combustion of vaporized kerosene |
| ZHONG Zhan1,2, WANG Zhenguo1,2, SUN Mingbo1,2 |
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(1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;2.
2. Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Considering the two different cavity arrangement schemes, a series of direct-connected combustion tests were conducted with vaporized RP-3 under the simulated Mach 6.0 flight condition. Effects of cavity arrangement on characteristics of supersonic combustion of vaporized kerosene were investigated by comparing with the high-speed flame luminosity images, static pressure distributions along the combustor wall, and the thrust increments. The results show that the cavity arrangement and equivalence ratios affect the flame distribution, the heat release characteristic and the combustor performance significantly. For the parallel-cavity-equipped combustor, the flame distribution and heat release are concentrated near cavities, and the fuel specific impulse shows low sensitivity to the equivalence ratio. While the single-cavity-equipped combustor has a dispersive flame distribution and heat release, and the fuel specific impulse increases with the equivalence ratio. |
| Keywords: scramjet engine vaporized kerosene cavity equivalence ratio combustion characteristic |
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