| 带凹腔的超声速燃烧室燃烧流场数值模拟 |
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| 引用本文： | 杨事民,唐豪,黄玥.带凹腔的超声速燃烧室燃烧流场数值模拟[J].航空发动机,2008,34(3):35-38. |
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| 作者姓名： | 杨事民 唐豪 黄玥 |
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| 作者单位： | 南京航空航天大学能源与动力学院,南京,210016 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 对带凹腔结构的燃烧室二维甲烷燃烧流场进行了数值模拟.采用迎风3阶精度MUSCL格式求解二维含组分守恒N-S方程,湍流模型采用剪切修正的RNG k-e湍流模型,分别分析了凹腔不同的长深比和导流槽结构对燃料燃烧的影响;对喷甲烷燃烧工况进行了计算研究.结果表明:凹腔可以提高燃烧效率,却使总压恢复系数降低;凹腔的长深比越高,燃烧效率越高,总压恢复系数越低;在总压恢复系数较高的情况下,采用导流槽可进一步提高燃烧效率.
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| 关 键 词： | 超燃冲压发动机 燃烧室 数值模拟 凹腔结构 导流型凹槽 |
Numerical Simulation of Combustion Flow Field of Supersonic Combustor with Cavity |
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| Authors: | YANG Shi-min TANG Hao HUANG Yue |
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| Institution: | YANG Shi-min,TANG Hao,HUANG Yue (College of Energy , Power Engineering,Nanjing University of Aeronautics , Astronautics,Nanjing 210016,China) |
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| Abstract: | The numerical simulation of two-dimensional combustion flow field for the methane combustor with cavity was performed.Two-dimensional element-conservation N-S equation was solved by using three order up-wind accuracy MUSCL form.The turbulent model used RNG k-e turbulent model of shear correction,the effect of different length to depth ratios and different slot structures on the fuel combustion were analyzed.The operating condition of combustion was calculated.The conclusions are as follows: the combustion e... |
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| Keywords: | scramjet combustor numerical simulation cavity structure slot |
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