| 某型冲压燃烧室火焰稳定器布局数值优化研究 |
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| 引用本文： | 丁兆波,栾叶君,孙纪国.某型冲压燃烧室火焰稳定器布局数值优化研究[J].火箭推进,2009,35(6):9-13. |
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| 作者姓名： | 丁兆波 栾叶君 孙纪国 |
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| 作者单位： | 北京航天动力研究所,北京,100076 |
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| 摘 要： | 为了研究不同火焰稳定器布局对燃烧室流场特征和燃烧性能的影响，对某型亚燃冲压发动机燃烧室的三维湍流燃烧流场进行了数值模拟。文中采用守恒标量的PDF模型处理扩散燃烧问题，喷雾采用离散相模型，在全流场中用拉格朗日方法跟踪离散液滴的运动和输运。计算结果表明，内外圈稳定器轴向间距取1倍槽宽时出口温度分布最均匀，取2倍槽宽时温升效率最高；等槽负荷原则设计具有最优的出口温度均匀性、温升效率和流阻系数。计算结果定性合理，可用于预估不同条件下的燃烧室性能，用于燃烧室优化设计，指导燃烧试验。
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| 关 键 词： | 冲压燃烧室 火焰稳定器 燃烧流场 数值模拟 |
Numerical optimization study on flame-holder layout for a ramjet combustor |
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| Ding Zhaobo,Luan Yejun,Sun Jiguo.Numerical optimization study on flame-holder layout for a ramjet combustor[J].Journal of Rocket Propulsion,2009,35(6):9-13. |
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| Authors: | Ding Zhaobo Luan Yejun Sun Jiguo |
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| Institution: | (Beijing Aerospace Propulsion Institute, Beijing 100076, China) |
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| Abstract: | In order to study the influence of the flameholder layout on the outlet temperature distribution, combustion efficiency and total pressure loss, the numerical simulation of combustion flow field for a ramjet combustor was completed. The PDF combustion model is used to deal with the turbulent combustion. Results of numerical simulation show that the axial relative distance of flameholder has obvious effect on combustor performance. The equivalent wide design has the best performance. The results of computation are qualitatively reasonable. It was aimed at predicting the performance characteristics of ramjet combustor through numerical simulation, and giving guidance to modification design of combustor or combustion experiments. |
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| Keywords: | ramjet combustor flame-holder combustion flow field numerical simulation |
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