| 旋流对固体燃料冲压发动机燃烧过程的影响 |
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| 引用本文： | 李唯暄,吕庆山,陈雄,巩伦昆,薛海峰.旋流对固体燃料冲压发动机燃烧过程的影响[J].航空动力学报,2017,32(5):1250-1258. |
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| 作者姓名： | 李唯暄 吕庆山 陈雄 巩伦昆 薛海峰 |
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| 作者单位： | 1.南京理工大学 机械工程学院，南京 210094 |
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| 基金项目： | 预先研究项目（404040301） |
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| 摘 要： | 针对旋流数对固体燃料冲压发动机燃烧流场的影响，进行了不同旋流数(s=0,0.2,0.4,0.6)工况下固体燃料冲压发动机直连式试验研究，固体燃料采用高密度聚乙烯（HDPE），并对s=0.6和s=0两个工况进行数值仿真研究.试验和数值仿真结果表明:旋流的引入有助于火焰稳定，对提高补燃室压强和燃速有积极作用.在旋流工况下会使药柱表面热流密度高于无旋流，并使燃烧室中的化学反应更加充分.高强度旋流的引入会使燃烧更加充分，燃烧效率有所提高.
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| 关 键 词： | 固体燃料冲压发动机 旋流数 燃速 燃烧效率 火焰稳定 |
| 收稿时间： | 2016/6/8 0:00:00 |
Effect of swirl flows in combustion of solid fuel ramjet |
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| LI Wei-xuan,L Qing-shan,CHEN Xiong,GONG Lun-kun,XUE Hai-feng.Effect of swirl flows in combustion of solid fuel ramjet[J].Journal of Aerospace Power,2017,32(5):1250-1258. |
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| Authors: | LI Wei-xuan L Qing-shan CHEN Xiong GONG Lun-kun XUE Hai-feng |
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| Affiliation: | LI Wei-xuan,L(U) Qing-shan,CHEN Xiong,GONG Lun-kun,XUE Hai-feng |
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| Abstract: | To study the effect of swirl number on the combustion flow field of solid fuel ramjet, the experiments of connected pipe under different multiple swirl numbers (s=0.2, 0.4, 0.6) and non-swirl(s=0) were conducted. High-density polyethylene (HDPE) was used as a solid fuel. And simulations were conducted under conditions of s=0.6 and s=0. The results of simulation and experiment show that swirl flow is helpful to enhance the stability of flame and increase the regression rate of solid fuel and the pressure of afterburning chamber. For swirl case, the surface heat flux of solid fuel is higher than that of non-swirl case, and the chemical reaction in the combustion chamber is more efficient. Comprehensive analysis indicate that high intensity swirl flow helps to increase the combustion efficiency. |
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| Keywords: | solid fuel ramjet swirl number regression rate combustion efficiency stability of flame |
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